William Swan
William or Bill Swan may refer to:
- Sir William Swan, 1st Baronet, of the Swan baronets
- Sir William Swan, 2nd Baronet, of the Swan baronets
- William Swan , American silversmith
- William Swan , translator of the Bible into Mongolian
- William Swan , Scottish physicist
- William Graham Swan, American politician
- William Turnbull Swan, New Zealand politician
- William Swan , British Army officer and agriculturalist
- William Swan , rocketplane entrepreneur
- William Swan , American actor
- Bill Swan , Canadian children's author
- Billy Swan, American singer-songwriter
- Bill Swan , Australian rules footballer
- Bill Swan , American designer and builder of roadside sculptures
- Will Swan , American guitarist with post-hardcore band Dance Gavin Dance
- Will Swan , English footballer
- Bill Swan, American indie rock musician with Beulah