Cycle polo, bicycle polo, or bike polo (polo-vélo in French; Radpolo in German) is a team sport, similar to traditional polo, except that bicycles are used instead of horses. There are two versions of the sport: Hardcourt Bike Polo and grass court bike polo. The hardcourt game saw a sharp spike in interest in the first decade of the 21st century and new teams are sprouting up all across the world.

Cycle polo was featured in the Summer Olympic Games unofficial programme in 1908.

Fédération sportive du travail (FST) 1919-1934 in France.

The World Bicycle Polo Federation was founded in 1987 in the USA.

The Cycle Messenger World Championships have been ongoing since 1993, as well as the European Cycle Messenger Championships since 1996.

There are two versions of the grass games: the four-player game and the five-player game.

In the four-player game, cycle polo is played in a rectangular grass field, 150 by 100 metres (490 ft × 330 ft) officially, unofficially whatever field is big enough. Moreover, official dimensions can vary between 120 by 150 metres (390 ft × 490 ft) in length on 80 by 100 metres (260 ft × 330 ft) in width. The ball used approximately 2.5 inches (64 mm) in diameter and the mallet is of maximum length 1 metre (3 ft 3 in).

Goals are four metres wide and made with two goal posts without any crossbar.