An image forming apparatus includes a first right frame, a first left frame facing the first right frame, a second right frame positioned below the first right frame, a second left frame facing the second right frame and positioned below the second right frame. The image forming apparatus further includes an image forming unit positioned between the first right frame and the first left frame. The image forming apparatus still further includes a frame connecting unit configured to connect the first right frame, the first left frame, the second right frame and the second left frame. The first right frame and the second right frame are relatively slidable in an up-down direction, and the first left frame and the second left frame are relatively slidable in the up-down direction.