Suffolk Downs is a former Thoroughbred race track in East Boston, Massachusetts, United States. The track opened in 1935 after being built by Joseph A. Tomasello and was sold in May 2017 to a developer who plans to create housing and a shopping district. The final day of live racing at the track was June 30, 2019, with the facility hosting simulcast race wagering thereafter.

A number of famous horses raced at Suffolk Downs including Seabiscuit, Whirlaway, Funny Cide, and Cigar.

Non-race functions at the venue have included The Grand Chapiteau performances by Cirque du Soleil and as a satellite location for Revere Beach Sand Sculpture Festival.