Straight Girl is a Japanese Thoroughbred racehorse and broodmare. She showed modest ability in her early career, competing mainly in minor sprint races before winning the Listed Owari Stakes on her final run as a four-year-old in 2013. In the following year, she won the Grade 3 Silk Road Stakes and was placed in the Takamatsunomiya Kinen, Victoria Mile, Sprinters Stakes and Hong Kong Sprint. She appeared to reach her peak as a six-year-old in 2015 when she won both the Victoria Mile and the Sprinters Stakes. The mare was kept in training for two races a seven-year-old and produced arguably her best performance on her final appearance when she won the Victoria Mile for a second time.

The Sprinters Stakes (スプリンターズステークス) is a Grade 1 flat horse race in Japan open to thoroughbreds which are three-years-old or above. It is run over a distance of 1,200 metres at Nakayama Racecourse, and it takes place annually in late September or early October.