To provide a distance measuring apparatus, a distance measuring method, and an imaging apparatus that can satisfactorily measure a distance. A distance measuring apparatus includes an imaging unit capable of acquiring a plurality of images having view points different from one another and a controlling unit configured to perform control to acquire the plurality of images with the imaging unit in a state in which a patterned light is projected on any region using a projecting unit disposed in a position optically conjugate to the imaging unit and measure a distance on the basis of the plurality of images acquired by the imaging unit.