Iwagin Stadium, Multi-purpose stadium in Morioka, Japan

Iwagin Stadium is a football and rugby ground in Morioka Minami Park, with two natural grass pitches. The A ground, on the east side, has a main stand of 1,446 seats, a standing back stand for 2,500 and side stands for 1,000, giving a capacity of 4,946. Four LED floodlights stand beside the A ground.

Iwagin Stadium opened in 1998 as Morioka Minami Park Stadium, built to host the football tournament of the 1999 National High School Comprehensive Sports Festival. In April 2016 the city signed a three-year naming-rights contract with Bank of Iwate, worth 2 million yen a year, and the ground took the name Iwagin Stadium, shortened to "Iwasta"; the contract has since been extended to 31 March 2028.

The stadium's nickname, "Iwagin Stadium" or "Iwasta", comes from a 2016 naming-rights contract with Bank of Iwate, renewed through March 2028. Rugby fans know it as one of the home grounds of the Kamaishi Seawaves, and it hosted the football tournament of the 1999 National High School Comprehensive Sports Festival.

The ground sits in Morioka Minami Park, about 15 minutes on foot from JR Iwate-Iioka Station, or 10 minutes from the Nakagai bus stop on the 507 Kawakubo line from Morioka Station. Drivers reach it in roughly 10 minutes from Morioka Minami Interchange. On matchdays Iwate Grulla Morioka runs a paid shuttle bus from the west exit of Morioka Station.

The stadium has two natural-grass pitches, A on the east side and B on the west, each with 4,946 places: a 1,446-seat main stand, a 2,500-capacity standing back stand and 1,000 side-stand places. Floodlights were only installed in 2021, after a citizens' petition; four LED banks on the A ground were first used on 6 June 2021 in a J3 match against Fujieda MYFC.