William Kirk

William Kirk may refer to:

• William Arthur Kirk, American mathematician
• William Astor Kirk, (1922–2011), American civil rights activist and author
• William F. Kirk, (1877–1927), American baseball writer and poet
• Billy Kirk, rugby league footballer of the 1930s for England, and Warrington
• William Kirk (cricketer), (1866–1904), English cricketer
• William L. Kirk, (1932–2017), American air force officer
• William Umpleby Kirk, (1843–1928), photographer
• Bill Kirk (1934–2009), American baseball player
• William Kirk (MP), (1795–1870), Member of the UK Parliament for Newry
• William Kirke, MP for Clitheroe
• Will Kirk, Furniture restorer The Repair Shop