Rugby union at the 1920 Summer Olympics was played in Antwerp, Belgium. Two nations entered the rugby union event at the 1920 Summer Olympics — France and the United States. The French team were thought to be assured of the gold medal and came in as raging favourites in the event. However, the United States team surprised everyone when defeating France by eight points to nil.

The 1920 Summer Olympics, officially known as the Games of the VII Olympiad and commonly known as Antwerp 1920, were an international multi-sport event held in 1920 in Antwerp, Belgium.