Board Thread:Support Requests - Getting Technical/@comment-99.140.105.158-20140527060634/@comment-5007040-20140527124121

Jsteel7 wrote: If you've forgotten your username, the best thing you can do is search through your emails to find your username (if you gave an email that is) or if you can remember any wikis you've edited on, you can try using Special:ListUsers on that wiki to try and find a username that looks familiar.

Otherwise, you'll have to create a new account. If you found it you can easily make a new password for it :)