S.B.V. Excelsior is a professional football club based in Rotterdam, Netherlands. It was founded on 23 July 1902 and was formerly known as "Rotterdamse Voetbal en Atletiek Vereniging Excelsior" (Rotterdam Football and Athletics Union Excelsior). The club was relegated from the top Dutch league, Eredivisie in 2007–08, and promoted back to the Eredivisie at the end of the 2009–10 season. After their relegation in 2012, the team returned to the Eredivisie two years later.
Until 2015, Excelsior was a satellite club of Feyenoord. As such, Feyenoord gave Excelsior money and players (either on loan or free transfer). In 2005, the link between the two clubs was severed. It was reinstated in 2009, resulting in the loan of several Feyenoord players to Excelsior for the 2009–10 season. Excelsior's home stadium is the Stadion Woudestein, which has a capacity of about 4,500, one of the smallest stadiums hosting professional football in the Netherlands.