John Valentine
John Valentine may refer to:
- John Valentine (composer), English composer, father of composer Ann Valentine
- John Valentine (cricketer), Canadian cricketer
- John Valentine (baseball), American baseball player and umpire
- John J. Valentine, Sr., president of Wells Fargo
- John L. Valentine, Utah State Senator
- John Valentine, character from Twilight Zone: The Movie
- John Valentine (MP), 16th-century member of Parliament for Orford
- Johnny Valentine, American professional wrestler
- Johnny Valentine (footballer), played for Rangers F.C. in the 1957 Scottish League Cup Final
- Johnny Valentine, a pseudonym of American singer-songwriter Terry Fell
- Johnny Valentine, the penname of American writer Sasha Alyson