Musashino Forest Sport Plaza

35°39′58″N 139°31′21″E / 35.6660398°N 139.5224072°E / 35.6660398; 139.5224072

Musashino Forest Sport Plaza
Keio Arena Tokyo
武蔵野の森総合スポーツプラザ
The plaza in 2018
Interactive map of Musashino Forest Sport Plaza
Keio Arena Tokyo
LocationChōfu, Tokyo, Japan
CapacityOver 10,000
Construction
Opened25 November 2017 (25 November 2017)
Construction costOver $300 million

The Musashino Forest Sport Plaza (武蔵野の森総合スポーツプラザ, Musashino no Mori Sōgō Supōtsu Puraza), currently known as Keio Arena Tokyo (京王アリーナTOKYO) for sponsorship reasons, is a multi-sport venue located in Chōfu, Tokyo, Japan.

The main arena has a seating capacity of over 10,000, and also includes a swimming pool, a gym, a multi-use sports area and two fitness studios, that is available for use by the general public. It is the first new venue completed for Tokyo 2020. Construction took three and a half years and cost over $300 million to complete.

On February 14, 2025, Keio Corporation signed a 3-year naming rights for the venue until March 2028, and changed the name to Keio Arena Tokyo on May 1.