Momotaro Arena (桃太郎アリーナ, Momotarō Arīna) is an indoor sporting arena located in Okayama, Japan.

The arena is also known as the Okayama Prefectural Ground Gymnasium (岡山県総合グラウンド体育館, Okayama-ken sōgō guraundo taiikukan).

The capacity of the arena is 11,000 spectators.

It hosts the home matches of the Okayama Seagulls of the V.League.

This article about a sports venue in Japan is a stub.