Uživatelé mohou podepisovat své komentáře pomocí wikitextu ~~~~ a některých dalších variant. Nápověda:Podpisy to vysvětluje podrobněji. The signature code is replaced by an actual signature during the pre-save transforms .

• MediaWiki:Signature (doc) - the default signature format for logged-in users. Can be overridden via the nickname user preference. Must follow some rules. A timestamp will be appended to it.
• MediaWiki:Signature-anon (doc) - the signature format for anonymous users.
• MediaWiki:Sig-text (doc) - customize the wikitext inserted by the signature button on the MediaWiki editing toolbar.
• MediaWiki:Discussiontools-signature-prefix (doc) - customize the wikitext of the signature appended by the DiscussionTools extension.

Most editing tools provide a button for adding a signature; this is usually limited to talk namespaces . Most editing tools respect $wgExtraSignatureNamespaces which can be used to enable signature buttons on some non-talk namespaces as well. (The signature wikicode itself works in all namespaces.) Some tools also enable the signature button on pages with the __NEWSECTIONLINK__ magic word.