William Abbott
William, Bill or Billy 'Abbot/Abbott' may refer to:
Businessmen
- William Hawkins Abbott, American oil producer and trader
- William J. Abbott, American businessman and CEO of Great American Media
Performers
- William Abbot (actor), English actor and theatrical impresario
- William Alexander Abbott, American vaudeville and film actor, of Abbott and Costello
Physicians
- William Louis Abbott, American physician and philanthropist
- William Osler Abbott, American physician noted as co-developer of Miller-Abbott tube
Politicians
- William Abbot (politician), English politician
- William C. Abbott, member of the Texas Senate
- William Edward Abbott, Australian political figure; represented Electoral district of Upper Hunter 1889 to 1891
- William Henry Abbott, Newfoundland merchant and politician
Sportsmen
- William Abbott (cricketer), English cricketer
- William Abbott (footballer), English outside-left
- Bill Abbott Jr., Canadian Olympic sailor and boatbuilder
Others
- William L. Abbott, American mechanical engineer
- Billy Abbott, a character on the American daytime soap opera The Young and the Restless
- William Abbot (martyr), English Catholic martyr, executed along with William Knight
- William Wright Abbot, American archivist and historian