The World Junior Squash championships are the official junior tournament in the game of squash conducted by the World Squash Federation (WSF). Entry is open to individuals aged 19 and below. Since its inception the world juniors has been held biennially with the junior men (individual and team) held one year, junior women (individual and team) the following year. The men's team event was held unofficially from 1973 to 1979. The individuals event (for both men's and women's) are held annually starting from 2009 while the team event remains biennial.
The team event was started unofficially in April 1973 to coincide with the British Junior Open tournament which was held annually in Britain. Only four countries (England, Scotland, Wales and Sweden) took part in the event which was held at the courts of the National Westminster Bank Sports Ground in South London, playing for a shield presented by the bank.
Official men's world team championship tournament has been held between 1980 and now. It has been won by 4 different countries. The record number of countries participating in a single men's team tournament is 31, in the 2000 and the 2008 tournament held in Milan, Italy and Zürich, Switzerland respectively.
Official women's world team championship tournaments has been held between 1985 and now. It has been won by 4 different countries. The record number of countries participating in a single tournament is 20, in the 2005 tournament held in Herentals, Belgium.