John Leach (17 October 1846 – 1 February 1893) was an English cricketer.
Leach made his first-class cricket debut for Lancashire County Cricket Club against Middlesex in 1866 at Old Trafford.
He made two further first-class appearances in 1866, against Middlesex in the return fixture at the Cattle Market Ground, Islington, and Surrey at The Oval.
He made his next first-class appearance ten years later against Kent at Castleton Cricket Club Ground, Rochdale and a final appearance the following season against MCC at Lord's.
His brothers, William, Harold, Robert and Roger, all played first-class cricket.