The is a seasonal limited express train service operated by Kyushu Railway Company (JR Kyushu) in Kyushu, Japan, since October 2011.
The service operates between and , mostly at weekends and holiday periods, with two return workings per day.
The train stops at Uto Station and à Âda Station en route.
The train is formed of a specially modified 2-car KiHa 185 series diesel multiple unit set (KiHa 185-4 + KiHa 185-1012) which previously operated on Trans-Kyushu Limited Express services. The design concept was overseen by industrial designer Eiji Mitooka.
The main seating saloons retain the original 2+2 reclining seats used in the Trans-Kyushu Limited Express, with new seat covers.
The A-Train service was introduced on 8 October 2011. and also named after Kumamoto