An egg counter for counting eggs conveyed on an egg collection conveyor, includes first and second light emitting element arrays, a light receiving element array between the first and second light emitting element arrays, and a controller for processing light reflected from the respective eggs and received by the light receiving element array. The arrangement is such that light emitted from the light emitting elements of the arrays is reflected from the surface of the egg passing just under the light receiving element array, and received by the light receiving element array. The controller measures the light intensity of the reflected light, detects the peak value of the light intensity, and counts the egg on the basis of the two peak values of the light intensity with respect to that of the light emitted by the light emitting element arrays.