A zoom lens for projection is provided and includes a first group having a negative refractive power, a second group having a positive refractive power, a third group having a positive refractive power, and a fourth group having a positive or negative refractive power, in order from the magnification side. At variable power from a wide-angle end to a telephoto end, the second, third and fourth groups are moved to the magnification side, and the first group is slightly moved to the reduction side. Also, the following conditional expression (1) is satisfied. 0.95