A rayograph is Man Ray's term for a certain type of photograph made without a camera, a technique he claims to have invented.

Created without a negative, a rayograph is made by placing an object on or holding it above photographic paper in a darkroom and then switching on and off the light. This type of picture exists as a single original, which gives it a special status compared to the normal photograph, which is printed from a negative.

Man Ray usually rephotographed his rayographs and could in this way produce multiple copies.