To provide a limited reflection type photoelectric sensor capable of extending a detection range so as to allow detection of an object, a distance from which to the surface to be measured varies, with accuracy in a simple configuration. The limited reflection type photoelectric sensor (1A) includes a light projecting unit (10) having a laser diode (11) and a light receiving unit (20) having a photodiode (21). In the light projecting unit and the light receiving unit, an intersecting angle between an optical axis of a projected light beam and an optical axis of a receiving light beam is set such that the projected light beam from the light projecting unit is directed to an object detection limited area (S1-S3) and the receiving light beam which is reflected light from an object (M) existing in the object detection limited area is received by the light receiving unit. Presence/absence of the object is determined based on a light receiving level of the photodiode. A diffracting grating (13) configured to a projected light beam into beams oriented in a plurality of directions is provided in an optical path of the projected light beam from the laser diode (11).