William Sweeney
William or Bill Sweeney may refer to:
- Bill Sweeney (first baseman), baseball player
- Bill Sweeney (footballer), Australian footballer
- Bill Sweeney (ice hockey), Canadian ice hockey player
- Bill Sweeney (infielder), American baseball player
- Bill Sweeney (pitcher), baseball player
- Bill Sweeney (CEO), CEO of the International Foundation for Electoral Systems
- William Sweeney (composer), Scottish composer
- William J. Sweeney (Wisconsin politician), American politician
- William N. Sweeney, American politician
- William Sweeney (Medal of Honor), U.S. Navy sailor and Medal of Honor recipient
- W. Allison Sweeney, American newspaper writer, editor, and owner