"Clans" (クラン Kuran) are the factions of Cardfight!! Vanguard. Within the card game, they are the primary determinants of the structure of a deck. Clans are defined by their different themes and focuses; for example, Royal Paladin is a clan composed of holy knights focused on calling allies, while Kagero is a clan composed of fiery dragons and dragon knights focused on retiring the opponent's rear-guards. All cards have an original clan, listed in the bottom-right corner of the card above its race. Additionally, all clans are associated with a nation, one of the six countries or continents of Planet Cray, the setting of the Cardfight!! Vanguard universe.
In the main mode of Vanguard play, Clan Fight, decks can only be composed of cards from one clan, with some exceptions. Originally, cards were allowed to be used in decks regardless of clans, although many cards had restrictions that heavily discouraged using them with cards from different clans (such as Lord), and mixing clans was infrequent and largely discouraged. For various reasons, the Clan Fight regulation was eventually implemented in February 2014, rendering restrictions like Lord unnecessary, and while the Extreme Fight regulation was implemented to allow multi-clan decks, it is rarely played in practice.
To activate the trigger effect of a trigger unit, a player must have at least one vanguard or rear-guard on the field with the same clan as that trigger unit. However, due to Vanguard being primarily played with the aforementioned regulation, this restriction is largely irrelevant.
List of Clans
|Cray Elemental||Belongs to all clans and nations||Clear rainbow|
|Iconic||Does not belong to any nation||Gold|
|Touken Ranbu||Does not belong to any nation||Clear pink|
|TachiVan||Non-tournament legal||Yellow / Red|