William Valentine (disambiguation)

William Valentine (1862–1928) was an American educator and missionary.

William Valentine may also refer to:

• Billy Valentine (born William Valentine, 1925), American musician
• William Valentine (painter) (1798–1849), Canadian daguerreotyper and portrait painter
• William Valentine (politician) (born 1971/1972), American politician
• William Valentine, American musician and member of The Valentine Brothers