The invention provides a method for manufacturing flaked graphite and flaked graphite liquid dispersion, as well as flaked graphite, a flaked graphite liquid dispersion, and a flaked graphite/resin composite material. Provided is a method for manufacturing flaked graphite, the method allowing the flaked graphite to be obtained easily and securely without the need for a reduction treatment. The method for manufacturing flaked graphite is provided with a step wherein a carbon material having a graphene layered structure is immersed in a liquid containing a liquid material having a surface tension of 50 mN/m or less at 20 DEG C, and a step wherein the carbon material immersed in the liquid is irradiated with electromagnetic waves and heated, the liquid in contact with the carbon material being gasified in the step for heating the carbon material by irradiation with the electromagnetic waves.