To provide an adapter for attaching a camera by which attaching supporting form to the tripod or the like of the camera is freely changed even in both a long sideways direction and a vertically long direction in the case of photographing.

An arm for moving a camera 4 is erectly provided to freely tilt and rise at base end of a horizontal base for fixing 1. Then, a base frame for attaching a camera 6 constituted by perpendicularly forming a base plate part for attaching a camera 6b at the leading edge of a plate part for supporting 6a is pivotally attached to rotate and move by 180° near to the end of the arm 4. Thus, the camera is rotated by 90° centering around the optical axis line of a lens.