DISC BRAKE

This disc brake includes an attachment member having a pad guide part, a pair of friction pads, a caliper, and a pad spring. The pad guide part includes a recessed part, which is recessed in a disc rotation direction with respect to a bottom surface in a region on a disc radial direction outer side, in a region of a bottom part of the pad guide part on a disc radial direction inner side. The pad spring includes a guide part provided to be able to come into contact with a wall surface and the bottom surface of the pad guide part on the disc radial direction outer side and configured to guide movement of a protruding part in a disc axial direction, and a fitting part protruding in the disc rotation direction from the guide part and configured to elastically fit into the recessed part.