Provided is a zoom lens which is telecentric on a reduction side, including a plurality of lens units, in which the zoom lens satisfies the following conditions: .nu.dp>75 fw/fp<0.6 where ha indicates a height of a paraxial marginal ray passing through the zoom lens, and hb indicates a height of a paraxial chief ray passing through the zoom lens, where, among a plurality of positive lenses in the zoom lens, a positive lens whose hb/ha is the smallest is defined as a smallest positive lens in at least a part of a zoom range from a wide-angle end to a telephoto end, and where .nu.dp indicates an Abbe constant of a material of the smallest positive lens, fp indicates a focal length of a lens unit including the smallest positive lens, and fw indicates a focal length of an entire system at the wide-angle end.