William Laing may refer to: William Laing (bookseller) (1764–1832), Scottish bookseller William Laing (Medal of Honor) (c. 1831 – 1864), soldier in the Union Army and a Medal of Honor recipient William Laing (athlete) (1929–1997), Ghanaian athlete William Laing (artist) (born 1944), Scottish/Canadian artist William Kirby Laing, British civil engineer William Roy Laing, Australian rules footballer
See also Bill Laing, Canadian ice hockey player Billy Laing, Scottish footballer