To provide a suction nozzle supply system which can more efficiently supply suction nozzles in an electronic component mounter.

The suction nozzle supply system 10 has a plurality of nozzle holders 11 equipped with a plurality of storing sections 2 for storing suction nozzles 1 in responce to the plurality of nozzle holding sections 21, and movable sections 12 transfer each nozzle holder 11, thereby changing the alignment of the storing sections 2 arranged on each nozzle holder 11. Since the storing sections 2 for storing the suction nozzles 1 to be supply to the plurality of nozzle holding sections 21 are aligned in response to the prescribed alignment (nozzle attaching/detaching positions 15) of each nozzle holding section 21, the plurality of nozzle holding sections 21 can simultaneously attach or detach the plurality of suction nozzles 1.