A radiation imaging apparatus (100) that performs radiation imaging of a breast of a subject (1), which includes a table (2) for laying down the subject (1); a receiving section (6) that receives a breast of the subject (1) laid on the table (2) in a supine position; a radiation imaging section including a radiation emission unit (7) and a radiation detection unit (8) each located at a position opposing to each other being interposed by the breast of the subject (1) received in the receiving section (6); and a drive unit that shifts the receiving section (6) to a position suitable for imaging the breast of the subject (1).