The Yushun Himba (優駿牝馬), also known as the Japanese Oaks (オークス) is a Japanese Grade 1 flat horse race for three-year-old thoroughbred fillies run over a distance of 2,400 metres (approximately 1 mile 4 furlongs) at the Tokyo Racecourse, Fuchū, Tokyo in May.

It was first run in 1938 and is the Japanese equivalent of the English Epsom Oaks.

On May 23, 2010, in the 71st running of the Yushun Himba, Apapane and Saint Emilion hit the finish at the same time in the race, making the first time that a Grade 1 race in Japan has resulted in a dead heat for the win.

[2][3][4] On May 20, 2018, Almond Eye won the 2,400-meter Yushun Himba over Lily Noble by two lengths.

[5][6] Trial races provide automatic berths to the winning horses or placed horses as specified.