The present invention provides a lens barrel that has a first barrel member and a second barrel member, and arranges the first barrel member on an outer circumference of the second barrel member to enable the first barrel member to move in an optical axis direction. The lens barrel includes a plurality of engaging members configured to be held by the first barrel member and engaged with an engagement groove formed in the second barrel member, and to move in the optical axis direction along the engagement groove when the second barrel member rotates, and an annular urging member provided in an outer circumferential portion of the first barrel member and configured to urge the plurality of engaging members to the engagement groove formed in the second barrel member.