The 323 series (323系, 323-kei) is a DC electric multiple unit (EMU) train type operated by West Japan Railway Company (JR West) on the Osaka Loop Line in Osaka, Japan, since December 2016.

[1] The eight-car trains have stainless steel bodies, and the exterior livery features orange highlights.

[3] On car 8, the seats closest to the doors are removed to improve passenger circulation.

[5] Passenger information announcements are provided in two languages, and information screens are in four languages (Japanese, English, Chinese, and Korean), with pairs of screens over each door, and pairs at either end of the cars.

[1] A total of 21 eight-car sets (168 vehicles) were scheduled to be introduced between fiscal 2016 and 2019, entirely replacing the fleet of twenty-three 103 and 201 series trains.