Ōi Keibajō Mae Station (大井競馬場前駅, Ōi Keibajō-mae-eki) is a station on the Tokyo Monorail in Shinagawa, Tokyo, Japan.

Ōi Keibajō Mae Station is served by the 17.8 km Tokyo Monorail Haneda Airport Line from Monorail Hamamatsuchō in central Tokyo to Haneda Airport Terminal 2, and lies 7.1 km from the northern terminus of the line at Monorail Hamamatsuchō.

[1] Ōi Keibajō Mae Station opened on 27 May 1965.

[1] In fiscal 2011, the station was used by an average of 8,537 passengers daily.

[1] The station is located next to the Ōi Racecourse (after which it is named), and is also used by commuters from the nearby Yashio housing development.