A reclining apparatus in which assembly of a rotation cam to be arranged on the side of a center axis with respect to a pole and configured to move to a locked position in which outer teeth of the pole engages inner teeth of a ratchet (first member) is disclosed. A rotation cam 31 is formed with a through hole 31a having a center at a center of rotation thereof, and a spacer 75 provided on a bottom portion of a ratchet (first member) 21 and configured to restrict the pole 33 from moving to the bottom portion of the ratchet 21 is formed with a cylindrical portion 77 configured to fit to the through hole 31a of the rotation cam 31.