William Willett (disambiguation) explained

William Willett (1856–1915) was an English builder and promoter of daylight saving time.

William Willett may also refer to:

• William Willett Jr. (1869–1938), U.S. Representative
• William Willett (Royal Navy officer) (1919–1976)

See also

• William Willet, American artist
• William Willetts (disambiguation)