John or Jack Meredith may refer to:

• John A. Meredith (1814–1882), American politician and judge from Virginia
• John Meredith (rugby union) (1863–1920), Welsh international rugby union player
• John Meredith (general) (1864–1942), Australian Army brigadier-general in World War I
• John Meredith (baseball), American baseball player
• Jack Meredith (footballer) (1899–1970), English footballer
• John Meredith (folklorist) (1920–2001), Australian folklorist
• John Meredith (artist) (1933–2000), Canadian painter
• John Meredith (footballer) (born 1940), English former professional footballer

• John Meredith Temple (1910–1994), British Conservative MP
• Jack Meredith (disambiguation)