The FAI Gliding Commission (IGC) is the sporting body overseeing air sports at the international level so that essentially the same classes and class definitions are followed in all countries.
Gliding World Records are classified by the FAI under sub-classes that do not have a one-to-one correspondence with the above competition classes:
Glider classes not recognised by the FAI have been used in some regional and national competitions. The most significant of these are:
The Open Class is the oldest competition class, although it only came into formal existence with the creation of the two-seater class in the early 1950s.