A configuration of an iron golf-club head is defined as follows in order
to offer ease of addressing a ball with face open. In a projected figure
of the head focused on a projection plane including a sweet spot and
normal to a perpendicular from a center of gravity of the head to a face
thereof, a maximum transversal is defined by a straight line cutting
across a face contour over the greatest length as passing through an
intersection of a leading edge and a straight line drawn from a heel-side
end point of a face line in a predetermined direction of the projected
figure, and forms an angle of 39.degree. to 50.degree. (inclusive)
relative to a horizontal line. The face contour has a radius of curvature
of 10 mm to 22 mm (inclusive) in the vicinity of a toe-side intersection
of the face contour and the maximum transversal.