An image forming apparatus includes a casing, an upper cover, a lateral cover and a closing position holding mechanism which holds the lateral cover in a closing position. The closing position holding mechanism includes an engaging part provided in the upper cover and an engaged part provided in the lateral cover. When the upper cover is displaced from the opening position to the closing position in the state where the lateral cover is in the closing position, the engaging part is engaged with the engaged part from an outside on the lateral side of the casing. When the upper cover is displaced from the closing position to the opening position in the state where the lateral cover is in the closing position, the engagement of the engaging part with the engaged part is released as the upper cover is displaced.