diff --git a/docs/glossary/README.md b/docs/glossary/README.md
index 0d12320b8b17..c23fa716d015 100644
--- a/docs/glossary/README.md
+++ b/docs/glossary/README.md
@@ -279,6 +279,10 @@ OpenProject on-premises is a self-hosted version of OpenProject. As opposed to t
 - [Read how to activate the Enterprise on-premises edition](../enterprise-guide/enterprise-on-premises-guide/activate-enterprise-on-premises/)
 - [Read how to start a trial for Enterprise on-premises](../enterprise-guide/enterprise-on-premises-guide/enterprise-on-premises-trial/)
 
+### OpenID Connect (OIDC)
+
+OpenID Connect (OIDC) is an authentication protocol built on OAuth 2.0 that enables secure, simple, and standardized user identity verification. OpenProject Enterprise offers user interfaces for OIDC as well as for [SAML](#saml), so that administrators can set Single Sign-On (SSO) options for their users. [Read more about OpenID providers for OpenProject in our system admin guide](../system-admin-guide/authentication/openid-providers/).
+
 ## P
 
 ### Phase
@@ -374,6 +378,10 @@ In product management, the RICE score indicates the level of prioritization of a
 
 ## S
 
+### SAML
+
+SAML (Security Assertion Markup Language) is an open standard for exchanging authentication and authorization data between parties, typically an identity provider (IdP) and a service provider (SP). OpenProject Enterprise offers user interfaces for SAML as well as for [OpenID Connect](#openid-connect-oidc), so that administrators can set Single Sign-On (SSO) options for their users. [Read more about SAML providers for OpenProject in our system admin guide](../system-admin-guide/authentication/saml/).
+
 ### Share work packages
 
 OpenProject offers the possibility to share work packages with external groups or users that are not [members](#member) of the project. This feature is an [Enterprise add-on](#enterprise-add-on). Every user with whom a work package is shared must either already be a user of the instance or be newly created. The latter requires special rights. [Read more about OpenProject's feature to share work packages with project non-members](../user-guide/work-packages/share-work-packages/).