An image forming apparatus includes an apparatus main body, a housing body, and an outer wall member. The housing body can displace and rotate to a housing body fully closed angle position, a housing body fully open angle position, and a housing body non-access angle position. The outer wall member is disposed between the apparatus main body and the housing body, and connected to the apparatus main body to displace and rotate in response to the displacement and rotation of the housing body, and positioned at an outer wall fully closed angle position, an outer wall fully open angle position, and an outer wall non-access angle position that has an angular position enabling exposure of exchangeable components inside the apparatus main body but not enabling exchange by a user.