A lens drive mechanism, enabled to move lens holding member in a stable state, is disclosed. The lens drive mechanism comprises: first and second guide members, each extending in a predetermined direction; a first lens holding member holding a first lens and including a first cam follower portion and a first sleeve portion which engages with the first guide member and is guided in the predetermined direction; a second lens holding member holding a second lens and including a second cam follower portion and a second sleeve portion, which engages with the second guide member and is guided in the predetermined direction; and a cam member engaging with the first and second cam follower portions and driving the first and second lens holding members.