League of Legends is an esports game widely played at both amateur and professional levels.
This is a list of League of Legends competitions organized or sponsored by the game's publisher, Riot Games.
For the First Stand Tournament after the first split of season, each region allocated 1 spot each, total 5 teams compete.
For the Mid-Season Invitational after second split of season, each region allocated 2 spots each, total 10 teams compete.
For the World Championship with 17 spots: "Established" and "ended" refers to the years the tournament hosted a League of Legends tournament, not necessarily the years the competition itself was held.