A set 2 includes two or more iron type golf clubs 4 having loft angles different from each other. Each club 4 includes a shaft sf, a head hd, and a grip gp. The head hd includes a top surface 10, a sole surface 12, and a face surface 14 having a face line gv. The sole surface 12 includes a leading edge E1 and a trailing edge E2. In a planar view of the sole surface 12, the trailing edge E2 is curved so as to project toward a face side. A sole width WSt at a toe reference position is decreased as the loft angle is increased. A sole width WSh at a heel reference position is decreased as the loft angle is increased.