A lens apparatus includes: an optical member; a driving unit; a position detector; a rotary operation portion; a projection portion to be rotated interlockingly with the operation portion; an operation portion rotation detector; a driving controller for controlling the driving unit based on an amount of an operation of the operation portion; rotatable first (second) pins; first (second) side locking units; and a lock controller for controlling both the locking units based on a position of the optical member and a rotating direction of the operation portion. The projection portion is provided between the first regulation pin and the second regulation pin. The first regulation pin and the second regulation pin are elastically connected to each other. The lock controller locks the first (second) side locking unit when the focus unit reaches a first (second) end while the operation portion is operated toward the first (second) end.