A radiation imaging apparatus includes an arm configured to support a radiation generating unit that generates radiation, a post configured to support the arm, a movable portion configured to support the post and to be movable on a floor, and a supporting foot portion that is rotatable with respect to the movable portion. The supporting foot portion and the arm are operable to be placed in an open state and a closed state. In a state where the supporting foot portion and the arm are closed, the supporting foot portion covers the radiation generating unit.
