A golf club head 2 includes a face 4, a crown 6, a sole 8, and a side 10. At least a part of the crown 6, at least a part of the sole 8, or at least a part of the side 10 is formed by a porous part Ps including a porous metal. Porosity on a surface side of the porous part Ps is smaller than porosity on an inner side of the porous part Ps. Preferably, the porous part Ps has skin layers Ls formed on both sides thereof and a core layer Lc formed therebetween. Porosity of the skin layer Ls is smaller than that of the core layer. Preferably, a thickness of the skin layer is 0.05 mm or greater and 0.2 mm or less. Preferably, the whole porous part Ps is integrally formed.