Mizusawa Racecourse, Horse racing venue in Ōshū, Iwate Prefecture, Japan

Mizusawa Racecourse is a right-handed dirt track of 1,200 metres around, 20 metres wide, with a 220-metre home straight, in Ōshū beside the Kitakami River. Races run from 850 to 2,500 metres, and the 1,600-metre start, built in 1982, sits on a diagonal chute before the fourth corner. The main stand and the Tele-Track viewing building face the track.

The present course opened in 1965, when the racecourse moved from its old site near Mizusawa Park. In December 1993 it became the first local-racing facility to sell JRA betting, initially as Mizusawa Track, later Wins Mizusawa, and since 13 March 2021 as J-PLACE Mizusawa. The grandstand was damaged on 11 March 2011 and reopened on 10 December that year.

Between the paddock and the dining building stands a curved house converted into Treasure Shrine, blessed by Ōshū's Komagata Shrine; its heart-shaped charms are sought for luck in betting, family safety, business, exams and romance. Beside it, a fenced area hosts free pony rides on some days. The cherry trees along the Kitakami River behind the main stand open in late April and are opened to the public.

The racecourse has no general parking of its own; visitors use paid lots run by nearby residents. A free shuttle bus runs from JR Mizusawa Station on race days only, and Mizusawa-Esashi Station is a five-minute drive away. The main stand's first and second floors are closed with shutters in winter, while the Tele-Track offers a heated theatre-style viewing area.

Between the paddock and the dining building stands a curved house converted into Treasure Shrine, blessed by Ōshū's Komagata Shrine; it is said to grant luck in betting, family safety, business, exams and love, marked by a heart symbol. A fence beside it hosts free pony rides on some days.