Luxembourg competed at the 1920 Summer Olympics in Antwerp, Belgium.

The country's best result of the Games was a sixth-place finish in the 4x100 relay.

Majérus did not advance past the initial heats in the sprint event, and did not finish the 50 kilometres.

Luxembourg competed in the Olympic football tournament for the first time.

Alzin won the country's first medal in the sport, a silver in the heavyweight.