Olympics Grounds was a baseball grounds located in Washington, D.C.. It was home to the Washington Olympics of the National Association in 1871–1872 and home to the short-lived Washington clubs of 1873 and 1875, including the Washington Blue Legs. It is considered a major league ballpark by those who count the NA as a major league.
The ballfield was located at 16th Street NW (east); 17th Street NW (west); and S Street NW (south); about a mile west-southwest of the eventual site of Griffith Stadium. The neighborhood is now a combination of residences and commercial businesses.