A hand for connector connection that grips a component including a main body component, a flexible board extending from the main body component, and a first connector disposed on the flexible board and connects the first connector to a second connector of a mount substrate includes a first gripping section that grips the main body component and a second gripping section that grips the first connector. The second gripping section includes a close contact surface brought into close contact with a back surface of the first connector and a suction pad that starts suction of the back surface of the first connector in a position further projecting than the close contact surface and is contracted to a position where the suction pad is disposed flush with the close contact surface in a sucked state.