An image forming apparatus includes: an image forming apparatus main body; an ejection portion; a structure; a mounting mechanism; and a supporting member. The image forming apparatus main body has a cutout continuous with a space, the cutout being formed in such a manner as to straddle a surface of the image forming apparatus main body on a side thereof on which a recording medium is retrieved from the ejection portion and a surface of the image forming apparatus main body on one side thereof in a direction of a rotary shaft. An end of the supporting member being located at a position more distant than one end from the surface of the image forming apparatus main body on the side thereof on which the recording medium is retrieved from the ejection portion, in a state in which the structure is located in a second position.