A lens apparatus includes a can ring for moving an optical member in an optical axis direction by rotating about an optical axis relative to a fixed barrel. One end surface of the cam ring in the optical axis direction is in contact with a first ball array, while an opposite end surface of the cam ring in the optical axis direction is in contact with a second ball array, the first ball array is rotatably held by and between a ring member movable in the optical axis direction and the one end surface, the second ball array is rotatably held by and between a cap member fixed to the fixed barrel and the opposite end surface, and the ring member is biased by an elastic member toward the cam ring, and the cam ring is thereby biased toward the cap member.