A lens barrel includes a first cam member including a first cam portion engaged with a first lens holding member, the first cam member being configured to rotate and to move the first lens holding member, and a second cam member including a second cam portion engaged with a second lens holding member, the second cam member being configured to rotate around the optical axis to move the second lens holding member in the optical axis direction via the second cam portion. A third engagement portion provided on one of the first lens holding member and the second cam member is engaged with a third cam portion provided on the other. The second cam member is rotated, and moved in the optical axis direction by the third cam portion.