The lens barrel includes a base barrel, a movable barrel including first and second hole portions, a circumferentially rotatable barrel and first guide members. The base barrel includes straight guide portions guiding the movable barrel along an optical axis, the rotatable barrel includes cam portions moving the movable barrel with rotation of the rotatable barrel, the first guide members engage with the cam and straight guide portions. The cam portions, straight guide portions and first guide members are respectively provided at multiple circumferential phases, a guide member among the first guide members provided at a first phase engages with the first hole portion, each of other guide members among the first guide members provided at two or more second phases engages with each of the second hole portions. A circumferential width of each second hole portion is larger than that of the first hole portion.