Abstract: An iron-type golf club head that includes a rear wall having a variable thickness region. The variable thickness region includes a plurality of recesses formed in an interior surface of the rear wall. A thickness of the rear wall, defined by the recesses, is less than the thickness of the rear wall between the recesses. A body of the golf club head includes a face opening, a toe port, and an internal-weight cavity. The golf club head also includes a strike plate, attached to the body so that the strike plate covers the face opening, and an internal weight, seated in the internal-weight cavity. An internal cavity of the golf club head is configured to receive the filler material through the toe port. A ratio of a minimum rear wall thickness to a minimum face thickness is between 0.15 to 0.65.