User blog comment:Meighan/You've Got Founder Mail/@comment-168424-20110616153708/@comment-3574101-20110616182407

You can use Special:ListUsers to find out who the Bureaucrats and Admins are, but this does not always tell you who the Founder is. If a wiki has achievements enabled you can look for the 'Creator' badge. The Founder is the first bureaucrat of the wiki, so if you dig through logs you might be able to figure out who that is. In general though, who the Founder is, is not public info.