An image forming apparatus includes a movable endless belt; an image forming unit, a plurality of rollers including a first roller and a second roller, and an urging member. The urging member is provided in an inner peripheral surface side at a position which is adjacent to and upstream of the first roller and which is downstream of the second roller with respect to a movement direction of the belt. The urging member is supported at an upstream end portion thereof with respect to the movement direction of the belt and includes a first urging portion and a second urging portion at two different positions with respect to the movement direction of the belt. The first urging portion and the second urging portion urge the belt along a widthwise direction crossing the movement direction of the belt.