William Larkin

William Larkin may refer to:

• William Larkin (painter) (died 1619), English painter
• William J. Larkin Jr. (1928–2019), American politician
• William John Larkin (died 1885), New Zealand priest, Irish nationalist and newspaper proprietor
• William Thomas Larkin (1923–2006), American Roman Catholic bishop
• Billy Stiles or William Larkin (1871–1908), American outlaw in the Old West