--- /dev/null
+<a name="VarUSERNAME"></a>
+
+### <a name="USERNAME -- your login username"></a> USERNAME -- your login username
+
+- TWiki makes names available in three formats: USERNAME like `jsmith`, WIKINAME like `JohnSmith` and WIKIUSERNAME like `Main.JohnSmith`. Un-authenticated users are all [[TWikiGuest]].
+- Syntax: `%USERNAME%`
+- Expands to: `admin`
+- **_%X% Note:_** When used in a template topic, this variable will be expanded when the template is used to create a new topic. See [[TWikiTemplates#TemplateTopicsVars]] for details.
+- Related: [[REMOTE_USER|Main/WebHome#VarREMOTEUSER]], [[USERINFO|Main/WebHome#VarUSERINFO]], [[WIKINAME|Main/WebHome#VarWIKINAME]], [[WIKIUSERNAME|Main/WebHome#VarWIKIUSERNAME]], [[TWikiUserAuthentication]]