A bstract We derive the subleading soft graviton theorem in a generic quantum theory of
gravity for arbitrary number of soft external gravitons and arbitrary number of finite energy
external states carrying arbitrary mass and spin. Our results are valid to all orders in
perturbation theory when the number of non-compact space-time dimensions is six or more,
but only for tree amplitudes for five or less non-compact space-time dimensions due to
enhanced contribution to loop amplitudes from the infrared region.