Clans, also known as guilds, are organized groups created by players in Sherwood. Clans are normally headed by one or more leaders behaving as the "overlord". They are usually fighting or roleplaying based, often with the goal of defeating other clans in raids. Each clan typically has a self proclaimed base (chatroom), where the members meet. As clans are entirely player based, each clan has its unique rules, ranks, and website.

In mid 2013, with the release of the Room Designer, clans can now have their own room and designed world.


One of the principal purposes of clans is to raid other clans. A raid is where two or more clans combat against each other, typically when one of them moves into another's base and attacks them.