diff --git a/changelog.d/11298.doc b/changelog.d/11298.doc
new file mode 100644
index 0000000000..64ca1c84ed
--- /dev/null
+++ b/changelog.d/11298.doc
@@ -0,0 +1 @@
+Add Single Sign-On, SAML and CAS pages to the documentation.
diff --git a/docs/SUMMARY.md b/docs/SUMMARY.md
index 04320ab07b..cdedf8bccc 100644
--- a/docs/SUMMARY.md
+++ b/docs/SUMMARY.md
@@ -23,10 +23,10 @@
     - [Structured Logging](structured_logging.md)
     - [Templates](templates.md)
     - [User Authentication](usage/configuration/user_authentication/README.md)
-      - [Single-Sign On]()
+      - [Single-Sign On](usage/configuration/user_authentication/single_sign_on/README.md)
         - [OpenID Connect](openid.md)
-        - [SAML]()
-        - [CAS]()
+        - [SAML](usage/configuration/user_authentication/single_sign_on/saml.md)
+        - [CAS](usage/configuration/user_authentication/single_sign_on/cas.md)
         - [SSO Mapping Providers](sso_mapping_providers.md)
       - [Password Auth Providers](password_auth_providers.md)
       - [JSON Web Tokens](jwt.md)
diff --git a/docs/usage/configuration/user_authentication/single_sign_on/README.md b/docs/usage/configuration/user_authentication/single_sign_on/README.md
new file mode 100644
index 0000000000..b94aad92cf
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+++ b/docs/usage/configuration/user_authentication/single_sign_on/README.md
@@ -0,0 +1,5 @@
+# Single Sign-On
+
+Synapse supports single sign-on through the SAML, Open ID Connect or CAS protocols. 
+LDAP and other login methods are supported through first and third-party password
+auth provider modules.
\ No newline at end of file
diff --git a/docs/usage/configuration/user_authentication/single_sign_on/cas.md b/docs/usage/configuration/user_authentication/single_sign_on/cas.md
new file mode 100644
index 0000000000..3bac1b29f0
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+++ b/docs/usage/configuration/user_authentication/single_sign_on/cas.md
@@ -0,0 +1,8 @@
+# CAS
+
+Synapse supports authenticating users via the [Central Authentication
+Service protocol](https://en.wikipedia.org/wiki/Central_Authentication_Service)
+(CAS) natively.
+
+Please see the `cas_config` and `sso` sections of the [Synapse configuration
+file](../../../configuration/homeserver_sample_config.md) for more details.
\ No newline at end of file
diff --git a/docs/usage/configuration/user_authentication/single_sign_on/saml.md b/docs/usage/configuration/user_authentication/single_sign_on/saml.md
new file mode 100644
index 0000000000..2b6f052cc1
--- /dev/null
+++ b/docs/usage/configuration/user_authentication/single_sign_on/saml.md
@@ -0,0 +1,8 @@
+# SAML
+
+Synapse supports authenticating users via the [Security Assertion
+Markup Language](https://en.wikipedia.org/wiki/Security_Assertion_Markup_Language)
+(SAML) protocol natively.
+
+Please see the `saml2_config` and `sso` sections of the [Synapse configuration
+file](../../../configuration/homeserver_sample_config.md) for more details.
\ No newline at end of file