Belgium's Olympic debut included one swimmer, who entered the men's 4000 metre freestyle and did not finish the first round (semifinals).

Belgium's Olympic debut in 1900 included five fencers, one of whom reached the final pool but who won no medals.

Belgium's Olympic debut in 1900 included a men's football team, which is currently recognized as bronze medalists.

Belgium's Olympic debut in 1900 included two gymnasts who competed in the men's individual all-around.

Belgium competed at the first Olympic rowing regatta in 1900; the Royal Club Nautique de Gand men's eight took silver.