Showa Denko Dome Oita (昭和電工ドーム大分) is a multi-purpose stadium in the city of Ōita in Ōita Prefecture on Kyushu Island in Japan.
The stadium is currently called Showa Denko Dome Oita (昭和電工ドーム大分) as an abbreviated form, by naming rights. It was formerly called as Kyushu Oil Dome (九州石油ドーム Kyūshū Sekiyu Dōmu) sponsored by the
Kyushu Oil Co. until early 2010 and Oita Bank Dome (大分銀行ドーム Ōita Ginkō Dōmu) sponsored by the Oita Bank until early 2019. It is primarily used for football, and is the home field of J. League
club Oita Trinita. It was designed by the famous architect Kisho Kurokawa, and built by KT Group, Takenaka Corporation.
The stadium has been announced as one of the venues for 2019 Rugby World Cup which will be the first Rugby World Cup to be held in Asia.