Christianity is the largest religion in Rotterdam, with 31.1% of the population identifying. The second and third largest religions are Islam (13.3%) and Hinduism (3.3%), while about half of the population has no religious affiliation.
Since 1795 Rotterdam has hosted the chief congregation of the liberal Protestant brotherhood of Remonstrants. From 1955 it has been the see of the bishop of Rotterdam when the Rotterdam diocese was split from the Haarlem diocese. Since 2010 the city is home to the largest mosque in the Netherlands, the Essalam mosque, (capacity 1,500).
Rotterdam calls itself Sportstad (City of Sports). The city annually organises several world-renowned sporting events. Some examples are the Rotterdam Marathon, the World Port Tournament, and the Rotterdam World Tennis Tournament. Rotterdam also organises one race of the Red Bull Air Race World Championship and the car racing event Monaco aan de Maas (Monaco at the Meuse).
The city is also the home of many sports clubs and some historic and iconic athletes.
Mia Audina, a retired Indonesia born badminton player, living in Rotterdam.
Nelli Cooman, a Surinamese born retired athlete who held the 60 m dash world record, and was the world and European champion in that event.
Robert Doornbos, a Rotterdam born race car driver, who competed in the Formula One.
Robert Eenhoorn, a Rotterdam born retired MLB short stop, who competed for the New York Yankees, the Anaheim Angels and the New York Mets.
Dex Elmont, a Rotterdam born judoka, who finished second in the European championships in 2009 in the 65 to 73 kg (143 to 161 lb) division.
Guillaume Elmont, a Rotterdam born judoka, who became world champion in 2005 in the 73 to 81 kg (161 to 179 lb) division.
Francisco Elson, a Rotterdam born basketball player who played in the NBA, won the NBA finals in 2007 with the San Antonio Spurs.
Ignisious Gaisah, a Ghanaian born long jumper with a personal best of 8.43 metres (27.66 feet), residing in Rotterdam since 2001. Gaisah is a multiple medal winner in several international events, both as a citizen of Ghana and the Netherlands.
Francis Hoenselaar, a Rotterdam born female darts player, generally recognised as the best Dutch female darts player ever.
Robert Lathouwers, an athlete born in a Rotterdam suburb, specialised in the 800 m. Lathouwers gained international notoriety when he got disqualified after shoving Irish athlete David McCarthy in the 2010 European Championships.
Fatima Moreira de Melo, a Rotterdam born, three-times olympic champion in field hockey. Moreira de Melo currently is a professional poker player.
Piet Roozenburg, a Rotterdam born draughts player, who was the world champion from 1948 to 1956 and the 8-time Dutch champion.
Betty Stve, a Rotterdam born retired female tennis double specialist and 10-time Grand Slam winner.
Ingmar Vos, a Rotterdam born decathlete, with a personal best of 8224 points.