John Oldham

• John Oldham (colonist), early Puritan settler in Massachusetts
• John Oldham (poet), English poet
• John Oldham (psychiatrist), American psychiatrist
• John Oldham (engineer), Irish engineer
• John Oldham (architect), Australian landscape architect
• John Oldham (baseball), American Major League Baseball player
• Red Oldham, American baseball pitcher
• John Oldham (basketball), American basketball coach and player
• John Oldham (footballer), English footballer