Inline hockey (in British English) , also known as roller hockey (in American English) or roller in-line hockey, is a team sport played on a sport tiled flooring, wood, asphalt, cement, or any other appropriate surface, in which skaters use wooden or composite sticks to shoot a hard plastic puck into their opponent's net. The game is played between two teams with five players on the floor. A team usually consists of three lines of forwards, three pairs of defenceman and two goalies. Four members of each team skate up and down the floor trying to take the puck and score a goal against the opposing team. Each team has a goaltender who tries to stop the puck from going into the goal or "net".

A fast-paced sport, inline hockey is popular all over the world. It is a year-round pastime in some areas.

While there are numerous members of the Fédération Internationale de Roller Sports (FIRS), all of the 51 medals at the FIRS World Championships have been taken by these eight nations: Austria, Canada, the Czech Republic, Finland, France, Italy, Switzerland and the United States. Of the 17 gold medals awarded in the World Championships, only four did not go to the United States. Of the 30 FIRS Women's Inline Hockey World Championships medals, only one has not gone to one of these nations.