Francis Olympic Field is a stadium at Washington University in St. Louis that was used as the main venue for the 1904 Summer Olympics. It is currently used by the university's track and field, cross country, football, and soccer teams. It is located in St. Louis County, Missouri on the far western edge of the university's Danforth Campus. Built in time for the Louisiana Purchase Exposition, the stadium once had a 19,000-person seating capacity, but stadium renovations in 1984 reduced the capacity to 3,300 people. It is one of the oldest sports venues west of the Mississippi River that is still in use. Francis Olympic Field now uses artificial turf that can be configured for both soccer and football.

The 1904 Summer Olympics were an international multi-sport event held in St. Louis, Missouri, United States, from 29 August to 3 September 1904, as part of an extended sports program lasting from 1 July to 23 November 1904, located at what is now known as Francis Olympic Field on the campus of Washington University in St. Louis. The 1904 Summer Olympics were the first time the Olympic Games were held outside Europe.