John Oldham

John Oldham may refer to:

• John Oldham (colonist) (1592–1636), early Puritan settler in Massachusetts
• John Oldham (poet) (1653–1684), English poet
• John Oldham (psychiatrist), American psychiatrist
• John Oldham (engineer) (1779–1840), Irish engineer
• John Oldham (architect) (1907–1999), Australian landscape architect
• John Oldham (baseball) (1932–2024), American Major League Baseball player
• Red Oldham (John Cyrus Oldham, 1893–1961), American baseball pitcher
• John Oldham (basketball) (1923–2020), American basketball coach and player
• John Oldham (footballer) (born 1949), English footballer