Blacklist

Blacklist may refer to:


 * ext-spam>Special:MyLanguage/Extension:SpamBlacklist|SpamBlacklist, an extension for blacklisting URLs via regular expressions


 * ext-title>Special:MyLanguage/Extension:TitleBlacklist|TitleBlacklist, an extension for blacklisting usernames and titles via regular expressions


 * Blacklists, the configuration of various such blacklist systems on Wikimedia wikis

Per T254646, introducing new usages of the term is discouraged.