An iron type golf club head comprising: a face plate provided with face
grooves; and a head main body arranging the face plate on a front surface
thereof, wherein the face plate comprises a peripheral edge part firmly
fixed to the head main body, and a non-supported part forming an area
surrounded by the peripheral edge part and having a back surface apart
from the head main body, and the non-supported part satisfies the
following equations (1), (2) and (3): 1.1.ltoreq.ha/hb.ltoreq.1.6; (1)
1.1.times.(ha+hb)/2.ltoreq.hc.ltoreq.1.5.times.(ha+hb)/2; (2) 18
(mm).ltoreq.hb.ltoreq.38 (mm) (3) (in which ha is a toe side height
(mm) of the face groove in an end portion closest to the toe side, hb is
a heel side height (mm) of the face groove in an end portion closest to
the heel side, and hc is an intermediate height (mm) of the face groove
in an intermediate position between the end portion on the toe side and
the end portion on the heel side).