A zoom lens barrel includes a first optical element 300, 400 and a second optical element 600, a first guide member 703 configured to linearly guide the first optical element 300, 400 in an optical axis direction, a second guide member 704 configured to linearly guide the second optical element 600 in the optical axis direction, and a linear cylinder 700 including an opening portion configured to be able to integrate the first optical element and the second optical element only in the optical axis direction, a first holding portion 700g, 700h that supports both ends of the first guide member, and a second holding portion 700i, 700j that supports both ends of the second guide member.