diff --git a/kmip/core/config_helper.py b/kmip/core/config_helper.py
index 6621623..38754cc 100644
--- a/kmip/core/config_helper.py
+++ b/kmip/core/config_helper.py
@@ -45,15 +45,20 @@ class ConfigHelper(object):
     # Timeout measured in seconds
     DEFAULT_TIMEOUT = 30
 
-    def __init__(self):
+    def __init__(self, path=None):
         self.logger = logging.getLogger(__name__)
 
         self.conf = SafeConfigParser()
-        if self.conf.read(CONFIG_FILE):
-            self.logger.debug("Using config file at {0}".format(CONFIG_FILE))
+
+        filenames = path
+        if not path:
+            filenames = CONFIG_FILE
+
+        if self.conf.read(filenames):
+            self.logger.debug("Using config file at {0}".format(filenames))
         else:
             self.logger.warning(
-                "Config file {0} not found".format(CONFIG_FILE))
+                "Config file {0} not found".format(filenames))
 
     def get_valid_value(self, direct_value, config_section,
                         config_option_name, default_value):
diff --git a/kmip/demos/pie/create.py b/kmip/demos/pie/create.py
index 70a219f..fdaea59 100644
--- a/kmip/demos/pie/create.py
+++ b/kmip/demos/pie/create.py
@@ -44,7 +44,10 @@ if __name__ == '__main__':
     algorithm = getattr(enums.CryptographicAlgorithm, algorithm, None)
 
     # Build the client and connect to the server
-    with client.ProxyKmipClient(config=config) as client:
+    with client.ProxyKmipClient(
+            config=config,
+            config_file=opts.config_file
+    ) as client:
         try:
             uid = client.create(
                 algorithm,
diff --git a/kmip/demos/pie/create_key_pair.py b/kmip/demos/pie/create_key_pair.py
index e82eae5..018e838 100644
--- a/kmip/demos/pie/create_key_pair.py
+++ b/kmip/demos/pie/create_key_pair.py
@@ -43,7 +43,10 @@ if __name__ == '__main__':
     algorithm = getattr(enums.CryptographicAlgorithm, algorithm, None)
 
     # Build the client and connect to the server
-    with client.ProxyKmipClient(config=config) as client:
+    with client.ProxyKmipClient(
+            config=config,
+            config_file=opts.config_file
+    ) as client:
         try:
             public_uid, private_uid = client.create_key_pair(
                 algorithm,
diff --git a/kmip/demos/pie/decrypt.py b/kmip/demos/pie/decrypt.py
index 1b10aa6..f1764e8 100644
--- a/kmip/demos/pie/decrypt.py
+++ b/kmip/demos/pie/decrypt.py
@@ -54,7 +54,10 @@ if __name__ == '__main__':
         message = binascii.unhexlify(message[1:])
 
     # Build the client and connect to the server
-    with client.ProxyKmipClient(config=config) as client:
+    with client.ProxyKmipClient(
+            config=config,
+            config_file=opts.config_file
+    ) as client:
         # Decrypt the cipher text with the encryption key.
         try:
             plain_text = client.decrypt(
diff --git a/kmip/demos/pie/derive_key.py b/kmip/demos/pie/derive_key.py
index 122799b..f66e7e9 100644
--- a/kmip/demos/pie/derive_key.py
+++ b/kmip/demos/pie/derive_key.py
@@ -30,7 +30,10 @@ if __name__ == '__main__':
     config = opts.config
 
     # Build the client and connect to the server
-    with client.ProxyKmipClient(config=config) as client:
+    with client.ProxyKmipClient(
+            config=config,
+            config_file=opts.config_file
+    ) as client:
         # Create keys to use for derivation
         try:
             key_id = client.create(
diff --git a/kmip/demos/pie/destroy.py b/kmip/demos/pie/destroy.py
index 7e7dc33..0302282 100644
--- a/kmip/demos/pie/destroy.py
+++ b/kmip/demos/pie/destroy.py
@@ -37,7 +37,10 @@ if __name__ == '__main__':
         sys.exit()
 
     # Build the client and connect to the server
-    with client.ProxyKmipClient(config=config) as client:
+    with client.ProxyKmipClient(
+            config=config,
+            config_file=opts.config_file
+    ) as client:
         try:
             client.destroy(uid)
             logger.info("Successfully destroyed secret with ID: {0}".format(
diff --git a/kmip/demos/pie/encrypt.py b/kmip/demos/pie/encrypt.py
index 1946eeb..4a84ffe 100644
--- a/kmip/demos/pie/encrypt.py
+++ b/kmip/demos/pie/encrypt.py
@@ -50,7 +50,10 @@ if __name__ == '__main__':
     message = bytes(message, 'utf-8')
 
     # Build the client and connect to the server
-    with client.ProxyKmipClient(config=config) as client:
+    with client.ProxyKmipClient(
+            config=config,
+            config_file=opts.config_file
+    ) as client:
         # Create an encryption key.
         try:
             key_id = client.create(
diff --git a/kmip/demos/pie/get.py b/kmip/demos/pie/get.py
index 90fc434..aaa8962 100644
--- a/kmip/demos/pie/get.py
+++ b/kmip/demos/pie/get.py
@@ -37,7 +37,10 @@ if __name__ == '__main__':
         sys.exit()
 
     # Build the client and connect to the server
-    with client.ProxyKmipClient(config=config) as client:
+    with client.ProxyKmipClient(
+            config=config,
+            config_file=opts.config_file
+    ) as client:
         try:
             secret = client.get(uid)
             logger.info("Successfully retrieved secret with ID: {0}".format(
diff --git a/kmip/demos/pie/get_attribute_list.py b/kmip/demos/pie/get_attribute_list.py
index 27b3dad..2c25c1b 100644
--- a/kmip/demos/pie/get_attribute_list.py
+++ b/kmip/demos/pie/get_attribute_list.py
@@ -37,7 +37,10 @@ if __name__ == '__main__':
         sys.exit()
 
     # Build the client and connect to the server
-    with client.ProxyKmipClient(config=config) as client:
+    with client.ProxyKmipClient(
+            config=config,
+            config_file=opts.config_file
+    ) as client:
         try:
             attribute_names = client.get_attribute_list(uid)
             logger.info("Successfully retrieved {0} attribute names:".format(
diff --git a/kmip/demos/pie/locate.py b/kmip/demos/pie/locate.py
index 2c10880..bbd1336 100644
--- a/kmip/demos/pie/locate.py
+++ b/kmip/demos/pie/locate.py
@@ -53,7 +53,10 @@ if __name__ == '__main__':
     attributes = [name_obj]
 
     # Build the client and connect to the server
-    with client.ProxyKmipClient(config=config) as client:
+    with client.ProxyKmipClient(
+            config=config,
+            config_file=opts.config_file
+    ) as client:
         try:
             uuids = client.locate(attributes=attributes)
             logger.info("Located uuids: {0}".format(uuids))
diff --git a/kmip/demos/pie/mac.py b/kmip/demos/pie/mac.py
index d30a34d..b5288ed 100644
--- a/kmip/demos/pie/mac.py
+++ b/kmip/demos/pie/mac.py
@@ -48,7 +48,10 @@ if __name__ == '__main__':
     algorithm = getattr(enums.CryptographicAlgorithm, algorithm, None)
 
     # Build the client and connect to the server
-    with client.ProxyKmipClient(config=config) as client:
+    with client.ProxyKmipClient(
+            config=config,
+            config_file=opts.config_file
+    ) as client:
         try:
             uid, mac_data = client.mac(data, uid, algorithm)
             logger.info("Successfully done MAC using key with ID: "
diff --git a/kmip/demos/pie/register_certificate.py b/kmip/demos/pie/register_certificate.py
index f5eeae6..ffaa38a 100644
--- a/kmip/demos/pie/register_certificate.py
+++ b/kmip/demos/pie/register_certificate.py
@@ -91,7 +91,10 @@ if __name__ == '__main__':
     cert.operation_policy_name = opts.operation_policy_name
 
     # Build the client and connect to the server
-    with client.ProxyKmipClient(config=config) as client:
+    with client.ProxyKmipClient(
+            config=config,
+            config_file=opts.config_file
+    ) as client:
         try:
             uid = client.register(cert)
             logger.info("Successfully registered certificate with ID: "
diff --git a/kmip/demos/pie/register_opaque_object.py b/kmip/demos/pie/register_opaque_object.py
index 043a77c..e0523c8 100644
--- a/kmip/demos/pie/register_opaque_object.py
+++ b/kmip/demos/pie/register_opaque_object.py
@@ -39,7 +39,10 @@ if __name__ == '__main__':
     obj.operation_policy_name = opts.operation_policy_name
 
     # Build the client and connect to the server
-    with client.ProxyKmipClient(config=config) as client:
+    with client.ProxyKmipClient(
+            config=config,
+            config_file=opts.config_file
+    ) as client:
         try:
             uid = client.register(obj)
             logger.info("Successfully registered opaque object with ID: "
diff --git a/kmip/demos/pie/register_private_key.py b/kmip/demos/pie/register_private_key.py
index 7807f8f..ee27ffb 100644
--- a/kmip/demos/pie/register_private_key.py
+++ b/kmip/demos/pie/register_private_key.py
@@ -118,7 +118,10 @@ if __name__ == '__main__':
     key.operation_policy_name = opts.operation_policy_name
 
     # Build the client and connect to the server
-    with client.ProxyKmipClient(config=config) as client:
+    with client.ProxyKmipClient(
+            config=config,
+            config_file=opts.config_file
+    ) as client:
         try:
             uid = client.register(key)
             logger.info("Successfully registered private key with ID: "
diff --git a/kmip/demos/pie/register_public_key.py b/kmip/demos/pie/register_public_key.py
index b76728e..bc867dd 100644
--- a/kmip/demos/pie/register_public_key.py
+++ b/kmip/demos/pie/register_public_key.py
@@ -60,7 +60,10 @@ if __name__ == '__main__':
     key.operation_policy_name = opts.operation_policy_name
 
     # Build the client and connect to the server
-    with client.ProxyKmipClient(config=config) as client:
+    with client.ProxyKmipClient(
+            config=config,
+            config_file=opts.config_file
+    ) as client:
         try:
             uid = client.register(key)
             logger.info("Successfully registered public key with ID: "
diff --git a/kmip/demos/pie/register_secret_data.py b/kmip/demos/pie/register_secret_data.py
index b4e3628..2ac7072 100644
--- a/kmip/demos/pie/register_secret_data.py
+++ b/kmip/demos/pie/register_secret_data.py
@@ -41,7 +41,10 @@ if __name__ == '__main__':
     secret.operation_policy_name = opts.operation_policy_name
 
     # Build the client and connect to the server
-    with client.ProxyKmipClient(config=config) as client:
+    with client.ProxyKmipClient(
+            config=config,
+            config_file=opts.config_file
+    ) as client:
         try:
             uid = client.register(secret)
             logger.info(
diff --git a/kmip/demos/pie/register_symmetric_key.py b/kmip/demos/pie/register_symmetric_key.py
index 65c3b5e..38a0689 100644
--- a/kmip/demos/pie/register_symmetric_key.py
+++ b/kmip/demos/pie/register_symmetric_key.py
@@ -44,7 +44,10 @@ if __name__ == '__main__':
     key.operation_policy_name = opts.operation_policy_name
 
     # Build the client and connect to the server
-    with client.ProxyKmipClient(config=config) as client:
+    with client.ProxyKmipClient(
+            config=config,
+            config_file=opts.config_file
+    ) as client:
         try:
             uid = client.register(key)
             logger.info("Successfully registered symmetric key with ID: "
diff --git a/kmip/demos/pie/sign.py b/kmip/demos/pie/sign.py
index 286319b..291de5f 100644
--- a/kmip/demos/pie/sign.py
+++ b/kmip/demos/pie/sign.py
@@ -31,7 +31,10 @@ if __name__ == '__main__':
     config = opts.config
 
     # Build the client and connect to the server
-    with client.ProxyKmipClient(config=config) as client:
+    with client.ProxyKmipClient(
+            config=config,
+            config_file=opts.config_file
+    ) as client:
         # Create keys to use for derivation
         try:
             signing_key_id = client.register(
diff --git a/kmip/demos/pie/signature_verify.py b/kmip/demos/pie/signature_verify.py
index b3dba5c..18010e7 100644
--- a/kmip/demos/pie/signature_verify.py
+++ b/kmip/demos/pie/signature_verify.py
@@ -31,7 +31,10 @@ if __name__ == '__main__':
     config = opts.config
 
     # Build the client and connect to the server
-    with client.ProxyKmipClient(config=config) as client:
+    with client.ProxyKmipClient(
+            config=config,
+            config_file=opts.config_file
+    ) as client:
         # Create keys to use for derivation
         try:
             signing_key_id = client.register(
diff --git a/kmip/demos/units/activate.py b/kmip/demos/units/activate.py
index 24c8f2e..27796e7 100644
--- a/kmip/demos/units/activate.py
+++ b/kmip/demos/units/activate.py
@@ -40,7 +40,7 @@ if __name__ == '__main__':
         sys.exit()
 
     # Build the client and connect to the server
-    client = KMIPProxy(config=config)
+    client = KMIPProxy(config=config, config_file=opts.config_file)
     client.open()
 
     # Activate the object
diff --git a/kmip/demos/units/create.py b/kmip/demos/units/create.py
index b41ff00..60179ef 100644
--- a/kmip/demos/units/create.py
+++ b/kmip/demos/units/create.py
@@ -74,7 +74,7 @@ if __name__ == '__main__':
         credential = credential_factory.create_credential(credential_type,
                                                           credential_value)
     # Build the client and connect to the server
-    client = KMIPProxy(config=config)
+    client = KMIPProxy(config=config, config_file=opts.config_file)
     client.open()
 
     # Build the different object attributes
diff --git a/kmip/demos/units/create_key_pair.py b/kmip/demos/units/create_key_pair.py
index 86e8d71..c0e4dac 100644
--- a/kmip/demos/units/create_key_pair.py
+++ b/kmip/demos/units/create_key_pair.py
@@ -87,7 +87,7 @@ if __name__ == '__main__':
         credential = credential_factory.create_credential(credential_type,
                                                           credential_value)
     # Build the client and connect to the server
-    client = KMIPProxy(config=config)
+    client = KMIPProxy(config=config, config_file=opts.config_file)
     client.open()
 
     algorithm_obj = attribute_factory.create_attribute(attribute_type,
diff --git a/kmip/demos/units/destroy.py b/kmip/demos/units/destroy.py
index cb27336..bedaa00 100644
--- a/kmip/demos/units/destroy.py
+++ b/kmip/demos/units/destroy.py
@@ -59,7 +59,7 @@ if __name__ == '__main__':
         credential = credential_factory.create_credential(credential_type,
                                                           credential_value)
     # Build the client and connect to the server
-    client = KMIPProxy(config=config)
+    client = KMIPProxy(config=config, config_file=opts.config_file)
     client.open()
 
     # Destroy the SYMMETRIC_KEY object
diff --git a/kmip/demos/units/discover_versions.py b/kmip/demos/units/discover_versions.py
index ad9a662..4d18087 100644
--- a/kmip/demos/units/discover_versions.py
+++ b/kmip/demos/units/discover_versions.py
@@ -45,7 +45,7 @@ if __name__ == '__main__':
             protocol_versions.append(ProtocolVersion(int(mm[0]), int(mm[1])))
 
     # Build the client and connect to the server
-    client = KMIPProxy(config=config)
+    client = KMIPProxy(config=config, config_file=opts.config_file)
     client.open()
 
     result = client.discover_versions(protocol_versions=protocol_versions)
diff --git a/kmip/demos/units/get.py b/kmip/demos/units/get.py
index db1cc0f..8db8c83 100644
--- a/kmip/demos/units/get.py
+++ b/kmip/demos/units/get.py
@@ -77,7 +77,7 @@ if __name__ == '__main__':
         key_format_type = KeyFormatType(format_type_enum)
 
     # Build the client and connect to the server
-    client = KMIPProxy(config=config)
+    client = KMIPProxy(config=config, config_file=opts.config_file)
     client.open()
 
     # Retrieve the SYMMETRIC_KEY object
diff --git a/kmip/demos/units/locate.py b/kmip/demos/units/locate.py
index 1e882ac..7eb6057 100644
--- a/kmip/demos/units/locate.py
+++ b/kmip/demos/units/locate.py
@@ -64,7 +64,7 @@ if __name__ == '__main__':
         credential = credential_factory.create_credential(credential_type,
                                                           credential_value)
     # Build the client and connect to the server
-    client = KMIPProxy(config=config)
+    client = KMIPProxy(config=config, config_file=opts.config_file)
     client.open()
 
     # Build name attribute
diff --git a/kmip/demos/units/query.py b/kmip/demos/units/query.py
index 144d86d..298c003 100644
--- a/kmip/demos/units/query.py
+++ b/kmip/demos/units/query.py
@@ -56,7 +56,7 @@ if __name__ == '__main__':
         QueryFunction(QueryFunctionEnum.QUERY_EXTENSION_MAP))
 
     # Build the client and connect to the server
-    client = KMIPProxy(config=config)
+    client = KMIPProxy(config=config, config_file=opts.config_file)
     client.open()
 
     result = client.query(query_functions=query_functions)
diff --git a/kmip/demos/units/register.py b/kmip/demos/units/register.py
index 6f177f7..05d4f1a 100644
--- a/kmip/demos/units/register.py
+++ b/kmip/demos/units/register.py
@@ -72,7 +72,7 @@ if __name__ == '__main__':
 
     # Build the client, connect to the server, register the secret, and
     # disconnect from the server
-    client = KMIPProxy(config=config)
+    client = KMIPProxy(config=config, config_file=opts.config_file)
 
     client.open()
     result = client.register(object_type, template_attribute, secret)
diff --git a/kmip/demos/units/revoke.py b/kmip/demos/units/revoke.py
index 800918b..b569b98 100644
--- a/kmip/demos/units/revoke.py
+++ b/kmip/demos/units/revoke.py
@@ -41,7 +41,7 @@ if __name__ == '__main__':
         sys.exit()
 
     # Build the client and connect to the server
-    client = KMIPProxy(config=config)
+    client = KMIPProxy(config=config, config_file=opts.config_file)
     client.open()
 
     # Activate the object
diff --git a/kmip/demos/utils.py b/kmip/demos/utils.py
index 7d8c686..7401162 100644
--- a/kmip/demos/utils.py
+++ b/kmip/demos/utils.py
@@ -86,6 +86,15 @@ def build_cli_parser(operation=None):
         default="client",
         dest="config",
         help="Client configuration group to load from configuration file")
+    parser.add_option(
+        "-s",
+        "--config-file",
+        action="store",
+        type="str",
+        default=None,
+        dest="config_file",
+        help="Path to the client configuration file."
+    )
 
     if operation is Operation.CREATE:
         parser.add_option(
diff --git a/kmip/pie/client.py b/kmip/pie/client.py
index f9fbd7a..95c6c08 100644
--- a/kmip/pie/client.py
+++ b/kmip/pie/client.py
@@ -61,7 +61,8 @@ class ProxyKmipClient(object):
                  ssl_version=None,
                  username=None,
                  password=None,
-                 config='client'):
+                 config='client',
+                 config_file=None):
         """
         Construct a ProxyKmipClient.
 
@@ -88,6 +89,9 @@ class ProxyKmipClient(object):
                 file. Use to load a specific set of configuration settings from
                 the configuration file, instead of specifying them manually.
                 Optional, defaults to the default client section, 'client'.
+            config_file (string): The path to the client's configuration file.
+                Optional, defaults to None.
+
         """
         self.logger = logging.getLogger()
 
@@ -104,7 +108,9 @@ class ProxyKmipClient(object):
             ssl_version=ssl_version,
             username=username,
             password=password,
-            config=config)
+            config=config,
+            config_file=config_file
+        )
 
         # TODO (peter-hamilton) Add a multiprocessing lock for synchronization.
         self._is_open = False
diff --git a/kmip/services/kmip_client.py b/kmip/services/kmip_client.py
index f4e861a..547190e 100644
--- a/kmip/services/kmip_client.py
+++ b/kmip/services/kmip_client.py
@@ -59,6 +59,7 @@ from kmip.core.utils import BytearrayStream
 import logging
 import logging.config
 import os
+import six
 import socket
 import ssl
 
@@ -73,15 +74,27 @@ class KMIPProxy:
                  cert_reqs=None, ssl_version=None, ca_certs=None,
                  do_handshake_on_connect=None,
                  suppress_ragged_eofs=None,
-                 username=None, password=None, timeout=30, config='client'):
+                 username=None, password=None, timeout=30, config='client',
+                 config_file=None):
         self.logger = logging.getLogger(__name__)
         self.credential_factory = CredentialFactory()
         self.config = config
 
+        if config_file:
+            if not isinstance(config_file, six.string_types):
+                raise ValueError(
+                    "The client configuration file argument must be a string."
+                )
+            if not os.path.exists(config_file):
+                raise ValueError(
+                    "The client configuration file '{}' does not "
+                    "exist.".format(config_file)
+                )
+
         self._set_variables(host, port, keyfile, certfile,
                             cert_reqs, ssl_version, ca_certs,
                             do_handshake_on_connect, suppress_ragged_eofs,
-                            username, password, timeout)
+                            username, password, timeout, config_file)
         self.batch_items = []
 
         self.conformance_clauses = [
@@ -1553,8 +1566,8 @@ class KMIPProxy:
     def _set_variables(self, host, port, keyfile, certfile,
                        cert_reqs, ssl_version, ca_certs,
                        do_handshake_on_connect, suppress_ragged_eofs,
-                       username, password, timeout):
-        conf = ConfigHelper()
+                       username, password, timeout, config_file):
+        conf = ConfigHelper(config_file)
 
         # TODO: set this to a host list
         self.host_list_str = conf.get_valid_value(
diff --git a/kmip/tests/unit/services/test_kmip_client.py b/kmip/tests/unit/services/test_kmip_client.py
index a4c8b17..c9c7c95 100644
--- a/kmip/tests/unit/services/test_kmip_client.py
+++ b/kmip/tests/unit/services/test_kmip_client.py
@@ -96,6 +96,32 @@ class TestKMIPClient(TestCase):
     def tearDown(self):
         super(TestKMIPClient, self).tearDown()
 
+    def test_init_with_invalid_config_file_value(self):
+        """
+        Test that the right error is raised when an invalid configuration file
+        value is provided to the client.
+        """
+        kwargs = {'config_file': 1}
+        self.assertRaisesRegexp(
+            ValueError,
+            "The client configuration file argument must be a string.",
+            KMIPProxy,
+            **kwargs
+        )
+
+    def test_init_with_invalid_config_file_path(self):
+        """
+        Test that the right error is raised when an invalid configuration file
+        path is provided to the client.
+        """
+        kwargs = {'config_file': 'invalid'}
+        self.assertRaisesRegexp(
+            ValueError,
+            "The client configuration file 'invalid' does not exist.",
+            KMIPProxy,
+            **kwargs
+        )
+
     def test_close(self):
         """
         Test that calling close on the client works as expected.
@@ -646,13 +672,21 @@ class TestKMIPClient(TestCase):
         host_list_string = '127.0.0.1,127.0.0.3,  127.0.0.5'
         host_list_expected = ['127.0.0.1', '127.0.0.3', '127.0.0.5']
 
-        self.client._set_variables(host=host_list_string,
-                                   port=None, keyfile=None, certfile=None,
-                                   cert_reqs=None, ssl_version=None,
-                                   ca_certs=None,
-                                   do_handshake_on_connect=False,
-                                   suppress_ragged_eofs=None, username=None,
-                                   password=None, timeout=None)
+        self.client._set_variables(
+            host=host_list_string,
+            port=None,
+            keyfile=None,
+            certfile=None,
+            cert_reqs=None,
+            ssl_version=None,
+            ca_certs=None,
+            do_handshake_on_connect=False,
+            suppress_ragged_eofs=None,
+            username=None,
+            password=None,
+            timeout=None,
+            config_file=None
+        )
         self.assertEqual(host_list_expected, self.client.host_list)
 
     def test_host_is_invalid_input(self):