To provide a graphite composite material that is light, and excellent in mechanical strength and further excellent in thermal conductivity.

There is provided a graphite composite film in which a reinforcing fiber layer is formed at least on one side of a graphite film. In the graphite composite film, it is desirable that (a) the thickness of the graphite film is 3-500 μm, (b) the thickness of the reinforcing fiber layer is 10-300 μm, and (c) the ratio of T_F/T_G is ≥0.1 and ≤20, wherein the thickness of the reinforcing fiber layer is T_F and the thickness of the graphite film is T_G.