Projection zoom lens and projection type display device

A projection zoom lens, consisting of:

• a plurality of lens groups that include at least two lens groups that move when changing magnification;
• the distances among all pairs of adjacent lens groups changing when changing magnification;
• the reduction side being configured to be telecentric;
• a first lens group, which has a negative refractive power and is fixed when changing magnification, being provided most toward the magnification side;
• the first lens group consisting of, in order from the magnification side to the reduction side, a first lens, which is a meniscus lens having a negative refractive power and a convex surface toward the magnification side, a second lens, which is a biconcave lens, and a third lens having one of a positive refractive power and a negative refractive power;
• and
• Conditional Formula (1) below being satisfied:
• −0.070<fw/f3<0.070 (1)
• wherein fw is the focal length of the entire projection zoom lens at the wide angle end, and f3 is the focal length of the third lens.