Indoor field hockey, or indoor hockey, is an indoor variant of "traditional" outdoor field hockey. It is not to be confused with other indoor hockey variants such as rink hockey or floorball.

It is traditionally and mainly played as a pastime by outdoor field hockey players during the off-season, when the outdoor pitches are frozen, or alternatively conditions are too hot for outdoor play. Indoor field hockey is played in regular national and international championships. The first Indoor Field Hockey World Cup was organized in 2003. It included countries which do not compete at the highest level of the outdoor game.

Indoor field hockey differs from its outdoor parent in several ways:

The small field and sideboards make indoor field hockey a quick, technical and physical game. Some of the original rules eventually influenced outdoor hockey, such as unrestricted substitution. It is often an ideal game for field hockey players to develop vision on and off the ball, developing a better understanding of tactics and set plays.

Field hockey, or hockey, is a team sport in which a team of players attempts to score goals by hitting, pushing or flicking a ball into an opposing team's goal using sticks. It is most commonly known simply as "hockey"; however, the name field hockey is used in countries in which the word hockey is generally reserved for another form of hockey, such as ice hockey or street hockey.

Hockey has several regular international tournaments for both men and women. These include the Olympic Games, the Commonwealth Games, the quadrennial Hockey World Cups, the annual Champions Trophies and World Cups for juniors.

The International Hockey Federation (FIH) is the global governing body. It organizes events such as the Hockey World Cup and Women's Hockey World Cup. The Hockey Rules Board under FIH produces rules for the sport.

Many countries have extensive club competitions for junior and senior players. Despite the large number of participants—hockey is thought to be the field team sport with the third largest number of participants worldwide (the first being association football and second being Cricket)—club hockey is not a popular spectator sport and few players play as full-time professionals.^{[citation needed]} Hockey is a sport played internationally by both males and females.