John or Jack Grundy may refer to: John Grundy (television presenter) (born 1946), English television presenter and author John Grundy Sr. (c. 1696–1748), English land surveyor and civil engineer John Grundy Jr. (1719–1783), English civil, drainage and canal engineer Jack Grundy (footballer) (1873–?), English association footballer Jack Grundy (rugby league) (1926–1978), English rugby league player John Clowes Grundy (1806–1867), English printseller and art patron Jack Grundy (cricketer) (born 1994), English cricketer