A variant form of the name John.

It is also used as a short version of the Johannes, which is the Latin form of the name Ioannes.

The name is used in Dutch, Polish, Scandinavian, Catalan, Czech, German and Western Slavic languages.

In English, it is short of the names Janice or Janet.

Alternative forms of the masculine name are: Hans, Jo, Jon, Sean, Xoan, Ivan, Johnny, Giannis, Yannis, Ivo, Giovanni, Juan.

Famous bearers are Jan Vermeer, Jan Van Eyck, Jan Akkerman, Jan de Bont, Jan Staaf.

Jan is popular in Czech Republic, Catalonia, Poland, Slovenia, Netherlands, Switzerland and Croatia.