A clan is a group of players that have formed a sort of team. They often play together, helping each other to improve. Clans often compete against each other, whether informally, as an impromptu match, or in organized leagues and tournaments.

Some clans are open and always looking for new players, others require you to be invited from a member. Clan members often put a "tag" in their player name, with a combination of symbols and letters, to indicate which clan they are a part of.

These are clans focusing on the Quake series of games, and resources relating to clans and clan events.