Okayama International Circuit

Okayama International Circuit Co., Ltd.
株式会社岡山国際サーキット
Company type	Kabushiki gaisha
Founded	Aida (part of Mimasaka), Okayama Prefecture, Japan (August 13, 1988)
Headquarters	Mimasaka, Okayama Prefecture, Japan
Parent	Aska Corporation

Okayama International Circuit
Location	Mimasaka, Okayama Prefecture, Japan
Time zone	UTC+09:00
Coordinates	34°54′54″N 134°13′16″E / 34.91500°N 134.22111°E
FIA Grade	2
Owner	Aska Corporation (March 2012–present); Unimat Corporation (April 2004–March 2012); Tanaka International (November 1990–April 2004)
Broke ground	1989
Opened	18 November 1990
Former names	TI Circuit Aida (November 1990–April 2005)
Major events	Current:; Super GT; (1999–2019, 2021–present); GT World Challenge Asia (2022–present); FRJC (2020–present); Super Formula Lights (1994–1995, 1998–2020, 2022–present); Former:; Formula One; Pacific Grand Prix (1994–1995); WTCC; Race of Japan (2008–2010); Super Formula; (2007–2008, 2015–2020); Formula BMW Pacific; (2009–2010); Formula V6 Asia (2008); Japan Le Mans Challenge (2006–2007)
Website	http://www.okayama-international-circuit.jp/
Grand Prix Circuit (1990–present)
Length	3.703 km (2.300 miles)
Turns	13
Race lap record	1:14.023 ( Michael Schumacher, Benetton B194, 1994, F1)
Motorcycle Circuit (2020–present)
Length	3.747 km (2.328 miles)
Turns	17
Race lap record	1:31.036 ( Yuki Okamoto, Yamaha YZF-R1, 2023, SBK)
Piper Circuit (1990–present)
Length	1.956 km (1.221 miles)
Turns	8

Okayama International Circuit (岡山国際サーキット), formerly known as TI Circuit Aida (TIサーキット英田) before 2005, is a 3.703 km (2.301 mi) private motorsport race track in Mimasaka, Okayama Prefecture, Japan. TI was the abbreviation of "Tanaka International" after the name of the golf club owner, Hajime Tanaka, though the name of the circuit was officially "TI Circuit Aida".

As well as hosting racing events, the circuit has rental facilities including bikes and go karts available.

^ 株式会社岡山国際サーキットの株式取得（子会社化）についてのお知らせ [We resolved on the acquiation of whole stock in Okayama International Circuit Co., Ltd.] (PDF) (Press release) (in Japanese). Aska Corporation. March 12, 2012. Archived from the original (PDF) on September 21, 2013. Retrieved April 24, 2012.

[parent_company-1] 株式会社岡山国際サーキットの株式取得（子会社化）についてのお知らせ [We resolved on the acquiation of whole stock in Okayama International Circuit Co., Ltd.] (PDF) (Press release) (in Japanese). Aska Corporation. March 12, 2012. Archived from the original (PDF) on September 21, 2013. Retrieved April 24, 2012.

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