---
title: Subject (sub)
sidebar_custom_props:
    termName: Subject (sub)
    tags:
        - Tokens And Claims
    shortDescription: Unique identifier of the token's principal.
    longDescription: The 'sub' claim identifies the principal (end-user or client) represented by the token. In OIDC, 'sub' is stable per issuer and may be pairwise or public.
---