A1 sport league

This is a list of sport leagues designated A1. The entries are sorted by sport and by countries.

Sports

 * Baseball
 * A1 baseball league (Italy)
 * Class A1 (baseball), a defunct classification within Minor League Baseball


 * Basketball
 * A1 basketball league (Albania), the first professional league
 * A1 basketball league (Bosnia and Herzegovina)
 * A1 basketball league (Bulgaria), the second professional league
 * A1 basketball league (Croatia)
 * A1 basketball league (Greece)


 * Inline Hockey
 * A1 inline hockey league (Italy), a league composed of eleven professional teams


 * Volleyball
 * A1 volleyball league (Greece)
 * A1 volleyball league (Italy)
 * A1 volleyball league (Portugal)
 * A1 women's volleyball league (Portugal)
 * Water polo
 * A1 water polo league (Greece)