"Pokémon League Champion" (Japanese: リーグ優勝者, League Champion), normally referred to as simply the "Champion" or "Pokémon Champion" (Japanese: チャンピオン, Champion), is the highest known level of rank for a Pokémon Trainer. The title is also colloquially referred to as "League Champ" (Japanese: ポケモン リーグの ちょうてん, Pokémon League's Greatest).
The title "Pokémon League Champion" usually refers to a Trainer who has defeated all eight Gym Leaders in his or her region, as well as his or her region's Elite Four and previous Champion. While the Kanto and Johto regions share a Champion, Hoenn, Sinnoh, Unova, Kalos, Estelia, and Illusia have their own. Any time a Champion is defeated, he or she must relinquish his or her title; however, he or she who defeats the Champion may refuse this title if he or she so chooses.