An image forming apparatus includes a frame, a top plate cover removable from the frame and having a top surface portion constituting a part of a top surface of the image forming apparatus, and a screw. The frame includes an upper surface portion opposite to the top surface portion, a front surface portion provided at a front side with respect to the upper surface portion, and a back surface portion provided at a back side with respect to the upper surface portion and provided with a through-hole. The top plate cover includes a first mounting portion fixed to the front surface portion, and a second mounting portion provided at a back side with respect to the first mounting portion and inserted into the through-hole. The screw is inserted in a front-back direction to fix the front surface portion of the frame and the first mounting portion.