diff --git a/tableauserverclient/__init__.py b/tableauserverclient/__init__.py
index 957a820d..538f8522 100644
--- a/tableauserverclient/__init__.py
+++ b/tableauserverclient/__init__.py
@@ -35,6 +35,7 @@
     Resource,
     RevisionItem,
     ScheduleItem,
+    SiteAuthConfiguration,
     SiteItem,
     ServerInfoItem,
     SubscriptionItem,
@@ -121,6 +122,7 @@
     "ServerInfoItem",
     "ServerResponseError",
     "SiteItem",
+    "SiteAuthConfiguration",
     "Sort",
     "SubscriptionItem",
     "TableauAuth",
diff --git a/tableauserverclient/models/__init__.py b/tableauserverclient/models/__init__.py
index e4131b72..10c3149f 100644
--- a/tableauserverclient/models/__init__.py
+++ b/tableauserverclient/models/__init__.py
@@ -35,7 +35,7 @@
 from tableauserverclient.models.revision_item import RevisionItem
 from tableauserverclient.models.schedule_item import ScheduleItem
 from tableauserverclient.models.server_info_item import ServerInfoItem
-from tableauserverclient.models.site_item import SiteItem
+from tableauserverclient.models.site_item import SiteItem, SiteAuthConfiguration
 from tableauserverclient.models.subscription_item import SubscriptionItem
 from tableauserverclient.models.table_item import TableItem
 from tableauserverclient.models.tableau_auth import Credentials, TableauAuth, PersonalAccessTokenAuth, JWTAuth
@@ -83,6 +83,7 @@
     "RevisionItem",
     "ScheduleItem",
     "ServerInfoItem",
+    "SiteAuthConfiguration",
     "SiteItem",
     "SubscriptionItem",
     "TableItem",
diff --git a/tableauserverclient/models/site_item.py b/tableauserverclient/models/site_item.py
index e4e146f9..ab65b97b 100644
--- a/tableauserverclient/models/site_item.py
+++ b/tableauserverclient/models/site_item.py
@@ -1188,6 +1188,34 @@ def _parse_element(site_xml, ns):
         )
 
 
+class SiteAuthConfiguration:
+    """
+    Authentication configuration for a site.
+    """
+
+    def __init__(self):
+        self.auth_setting: Optional[str] = None
+        self.enabled: Optional[bool] = None
+        self.idp_configuration_id: Optional[str] = None
+        self.idp_configuration_name: Optional[str] = None
+        self.known_provider_alias: Optional[str] = None
+
+    @classmethod
+    def from_response(cls, resp: bytes, ns: dict) -> list["SiteAuthConfiguration"]:
+        all_auth_configs = list()
+        parsed_response = fromstring(resp)
+        all_auth_xml = parsed_response.findall(".//t:siteAuthConfiguration", namespaces=ns)
+        for auth_xml in all_auth_xml:
+            auth_config = cls()
+            auth_config.auth_setting = auth_xml.get("authSetting", None)
+            auth_config.enabled = string_to_bool(auth_xml.get("enabled", ""))
+            auth_config.idp_configuration_id = auth_xml.get("idpConfigurationId", None)
+            auth_config.idp_configuration_name = auth_xml.get("idpConfigurationName", None)
+            auth_config.known_provider_alias = auth_xml.get("knownProviderAlias", None)
+            all_auth_configs.append(auth_config)
+        return all_auth_configs
+
+
 # Used to convert string represented boolean to a boolean type
 def string_to_bool(s: str) -> bool:
     return s.lower() == "true"
diff --git a/tableauserverclient/models/user_item.py b/tableauserverclient/models/user_item.py
index 365e44c1..5f6702b8 100644
--- a/tableauserverclient/models/user_item.py
+++ b/tableauserverclient/models/user_item.py
@@ -7,6 +7,7 @@
 from defusedxml.ElementTree import fromstring
 
 from tableauserverclient.datetime_helpers import parse_datetime
+from tableauserverclient.models.site_item import SiteAuthConfiguration
 from .exceptions import UnpopulatedPropertyError
 from .property_decorators import (
     property_is_enum,
@@ -94,6 +95,7 @@ def __init__(
         self.name: Optional[str] = name
         self.site_role: Optional[str] = site_role
         self.auth_setting: Optional[str] = auth_setting
+        self._idp_configuration_id: Optional[str] = None
 
         return None
 
@@ -184,6 +186,18 @@ def groups(self) -> "Pager":
             raise UnpopulatedPropertyError(error)
         return self._groups()
 
+    @property
+    def idp_configuration_id(self) -> Optional[str]:
+        """
+        IDP configuration id for the user. This is only available on Tableau
+        Cloud, 3.24 or later
+        """
+        return self._idp_configuration_id
+
+    @idp_configuration_id.setter
+    def idp_configuration_id(self, value: str) -> None:
+        self._idp_configuration_id = value
+
     def _set_workbooks(self, workbooks) -> None:
         self._workbooks = workbooks
 
@@ -204,8 +218,9 @@ def _parse_common_tags(self, user_xml, ns) -> "UserItem":
                 email,
                 auth_setting,
                 _,
+                _,
             ) = self._parse_element(user_xml, ns)
-            self._set_values(None, None, site_role, None, None, fullname, email, auth_setting, None)
+            self._set_values(None, None, site_role, None, None, fullname, email, auth_setting, None, None)
         return self
 
     def _set_values(
@@ -219,6 +234,7 @@ def _set_values(
         email,
         auth_setting,
         domain_name,
+        idp_configuration_id,
     ):
         if id is not None:
             self._id = id
@@ -238,6 +254,8 @@ def _set_values(
             self._auth_setting = auth_setting
         if domain_name:
             self._domain_name = domain_name
+        if idp_configuration_id:
+            self._idp_configuration_id = idp_configuration_id
 
     @classmethod
     def from_response(cls, resp, ns) -> list["UserItem"]:
@@ -265,6 +283,7 @@ def _parse_xml(cls, element_name, resp, ns):
                 email,
                 auth_setting,
                 domain_name,
+                idp_configuration_id,
             ) = cls._parse_element(user_xml, ns)
             user_item = cls(name, site_role)
             user_item._set_values(
@@ -277,6 +296,7 @@ def _parse_xml(cls, element_name, resp, ns):
                 email,
                 auth_setting,
                 domain_name,
+                idp_configuration_id,
             )
             all_user_items.append(user_item)
         return all_user_items
@@ -295,6 +315,7 @@ def _parse_element(user_xml, ns):
         fullname = user_xml.get("fullName", None)
         email = user_xml.get("email", None)
         auth_setting = user_xml.get("authSetting", None)
+        idp_configuration_id = user_xml.get("idpConfigurationId", None)
 
         domain_name = None
         domain_elem = user_xml.find(".//t:domain", namespaces=ns)
@@ -311,6 +332,7 @@ def _parse_element(user_xml, ns):
             email,
             auth_setting,
             domain_name,
+            idp_configuration_id,
         )
 
     class CSVImport:
@@ -361,6 +383,7 @@ def create_user_from_line(line: str):
                     values[UserItem.CSVImport.ColumnType.EMAIL],
                     values[UserItem.CSVImport.ColumnType.AUTH],
                     None,
+                    None,
                 )
             return user
 
diff --git a/tableauserverclient/server/endpoint/sites_endpoint.py b/tableauserverclient/server/endpoint/sites_endpoint.py
index 55d2a5ad..e2316fbb 100644
--- a/tableauserverclient/server/endpoint/sites_endpoint.py
+++ b/tableauserverclient/server/endpoint/sites_endpoint.py
@@ -4,7 +4,7 @@
 from .endpoint import Endpoint, api
 from .exceptions import MissingRequiredFieldError
 from tableauserverclient.server import RequestFactory
-from tableauserverclient.models import SiteItem, PaginationItem
+from tableauserverclient.models import SiteAuthConfiguration, SiteItem, PaginationItem
 
 from tableauserverclient.helpers.logging import logger
 
@@ -418,3 +418,20 @@ def re_encrypt_extracts(self, site_id: str) -> None:
 
         empty_req = RequestFactory.Empty.empty_req()
         self.post_request(url, empty_req)
+
+    @api(version="3.24")
+    def list_auth_configurations(self) -> list[SiteAuthConfiguration]:
+        """
+        Lists all authentication configurations on the current site.
+
+        REST API: https://help.tableau.com/current/api/rest_api/en-us/REST/rest_api_ref_site.htm#list_authentication_configurations_site
+
+        Returns
+        -------
+        list[SiteAuthConfiguration]
+            A list of authentication configurations on the current site.
+        """
+        url = f"{self.baseurl}/{self.parent_srv.site_id}/site-auth-configurations"
+        server_response = self.get_request(url)
+        auth_configurations = SiteAuthConfiguration.from_response(server_response.content, self.parent_srv.namespace)
+        return auth_configurations
diff --git a/tableauserverclient/server/request_factory.py b/tableauserverclient/server/request_factory.py
index 57542361..c898004f 100644
--- a/tableauserverclient/server/request_factory.py
+++ b/tableauserverclient/server/request_factory.py
@@ -913,6 +913,8 @@ def update_req(self, user_item: UserItem, password: Optional[str]) -> bytes:
             user_element.attrib["authSetting"] = user_item.auth_setting
         if password:
             user_element.attrib["password"] = password
+        if user_item.idp_configuration_id is not None:
+            user_element.attrib["idpConfigurationId"] = user_item.idp_configuration_id
         return ET.tostring(xml_request)
 
     def add_req(self, user_item: UserItem) -> bytes:
@@ -929,6 +931,9 @@ def add_req(self, user_item: UserItem) -> bytes:
 
         if user_item.auth_setting:
             user_element.attrib["authSetting"] = user_item.auth_setting
+
+        if user_item.idp_configuration_id is not None:
+            user_element.attrib["idpConfigurationId"] = user_item.idp_configuration_id
         return ET.tostring(xml_request)
 
 
diff --git a/test/assets/site_auth_configurations.xml b/test/assets/site_auth_configurations.xml
new file mode 100644
index 00000000..c81d179a
--- /dev/null
+++ b/test/assets/site_auth_configurations.xml
@@ -0,0 +1,18 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<tsResponse xmlns="http://tableau.com/api" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://tableau.com/api http://tableau.com/api/ts-api-2.3.xsd">
+  <siteAuthConfigurations>
+    <siteAuthConfiguration
+      authSetting="OIDC"
+      enabled="true"
+      idpConfigurationId="00000000-0000-0000-0000-000000000000"
+      idpConfigurationName="Initial Salesforce"
+      knownProviderAlias="Salesforce"
+    />
+    <siteAuthConfiguration
+      authSetting="SAML"
+      enabled="true"
+      idpConfigurationId="11111111-1111-1111-1111-111111111111"
+      idpConfigurationName="Initial SAML"
+    />
+  </siteAuthConfigurations>
+</tsResponse>
diff --git a/test/test_site.py b/test/test_site.py
index 96b75f9f..24381025 100644
--- a/test/test_site.py
+++ b/test/test_site.py
@@ -13,6 +13,7 @@
 GET_BY_NAME_XML = os.path.join(TEST_ASSET_DIR, "site_get_by_name.xml")
 UPDATE_XML = os.path.join(TEST_ASSET_DIR, "site_update.xml")
 CREATE_XML = os.path.join(TEST_ASSET_DIR, "site_create.xml")
+SITE_AUTH_CONFIG_XML = os.path.join(TEST_ASSET_DIR, "site_auth_configurations.xml")
 
 
 class SiteTests(unittest.TestCase):
@@ -260,3 +261,28 @@ def test_decrypt(self) -> None:
         with requests_mock.mock() as m:
             m.post(self.baseurl + "/0626857c-1def-4503-a7d8-7907c3ff9d9f/decrypt-extracts", status_code=200)
             self.server.sites.decrypt_extracts("0626857c-1def-4503-a7d8-7907c3ff9d9f")
+
+    def test_list_auth_configurations(self) -> None:
+        self.server.version = "3.24"
+        self.baseurl = self.server.sites.baseurl
+        with open(SITE_AUTH_CONFIG_XML, "rb") as f:
+            response_xml = f.read().decode("utf-8")
+
+        assert self.baseurl == self.server.sites.baseurl
+
+        with requests_mock.mock() as m:
+            m.get(f"{self.baseurl}/{self.server.site_id}/site-auth-configurations", status_code=200, text=response_xml)
+            configs = self.server.sites.list_auth_configurations()
+
+        assert len(configs) == 2, "Expected 2 auth configurations"
+
+        assert configs[0].auth_setting == "OIDC"
+        assert configs[0].enabled
+        assert configs[0].idp_configuration_id == "00000000-0000-0000-0000-000000000000"
+        assert configs[0].idp_configuration_name == "Initial Salesforce"
+        assert configs[0].known_provider_alias == "Salesforce"
+        assert configs[1].auth_setting == "SAML"
+        assert configs[1].enabled
+        assert configs[1].idp_configuration_id == "11111111-1111-1111-1111-111111111111"
+        assert configs[1].idp_configuration_name == "Initial SAML"
+        assert configs[1].known_provider_alias is None
diff --git a/test/test_user.py b/test/test_user.py
index 645adcfd..e258fa93 100644
--- a/test/test_user.py
+++ b/test/test_user.py
@@ -1,6 +1,7 @@
 import os
 import unittest
 
+from defusedxml import ElementTree as ET
 import requests_mock
 
 import tableauserverclient as TSC
@@ -249,3 +250,38 @@ def test_get_users_from_file(self):
             users, failures = self.server.users.create_from_file(USERS)
         assert users[0].name == "Cassie", users
         assert failures == []
+
+    def test_add_user_idp_configuration(self) -> None:
+        with open(ADD_XML) as f:
+            response_xml = f.read()
+        user = TSC.UserItem(name="Cassie", site_role="Viewer")
+        user.idp_configuration_id = "012345"
+
+        with requests_mock.mock() as m:
+            m.post(self.server.users.baseurl, text=response_xml)
+            user = self.server.users.add(user)
+
+            history = m.request_history[0]
+
+        tree = ET.fromstring(history.text)
+        user_elem = tree.find(".//user")
+        assert user_elem is not None
+        assert user_elem.attrib["idpConfigurationId"] == "012345"
+
+    def test_update_user_idp_configuration(self) -> None:
+        with open(ADD_XML) as f:
+            response_xml = f.read()
+        user = TSC.UserItem(name="Cassie", site_role="Viewer")
+        user._id = "0123456789"
+        user.idp_configuration_id = "012345"
+
+        with requests_mock.mock() as m:
+            m.put(f"{self.server.users.baseurl}/{user.id}", text=response_xml)
+            user = self.server.users.update(user)
+
+            history = m.request_history[0]
+
+        tree = ET.fromstring(history.text)
+        user_elem = tree.find(".//user")
+        assert user_elem is not None
+        assert user_elem.attrib["idpConfigurationId"] == "012345"