Cahokia Downs was an American horse racing track located on Highway 15 near the town of Alorton, St. Clair County, Illinois.

Run by the East St. Louis Jockey Club, the facility opened in 1954 and hosted both Standardbred harness racing and Thoroughbred flat racing events.

At Cahokia Downs on October 18, 1978, jockey David Gall became the first rider in United States Thoroughbred horse racing to win eight races on a single racecard.

[1] In October 1979 the Illinois Racing Commission refused to authorize any 1980 racing dates for Cahokia Downs and on April 2, 1980, the business filed for bankruptcy.

[2] The chute on the front straightaway was angled approximately 15 degrees to avoid bisecting a street in the stable area.