The Commonwealth Turf Cup is an American Thoroughbred horse race held each year since 2015 at Laurel Park in Laurel, Maryland. It was previously known as the Colonial Turf Cup when it was held at Colonial Downs race track in New Kent County, Virginia. It is raced on turf at a distance of one mile and is open to horses aged three years old and up. The current purse is $200,000. From 2005 to 2013, the race was run at  1 3⁄16 miles. For the 2015 renewal, the distance was shortened to  1 1⁄8 miles, and in 2016 to 1 mile.