A robot hand capable of reducing the load moment applied on the wrist of the robot hand in lifting an article includes a base, a first hand arm, and a second hand arm. The first hand arm is mounted on the base, includes a holding part configured to hold the article, and is configured such that the holding part is movable between a first distal position away from the base in a first direction, and a first proximal position close to the base more than the first distal position. The second hand arm is mounted on the base, includes a counter balancer weight, and is configured such that the counter balancer weight is movable between a second distal position away from the base in a second direction opposite to the first direction, and a second proximal position close to the base more than the second distal position.