Catholicism, Roman Catholicism or the Catholic Church, is the largest sub-denomination of Christianity. It claims to be the oldest Christian church, with its leader being the purported successor Saint Peter. In the Total War series, Catholic factions tend to be western European nations that did not undergo the Protestant reformation, as well as their colonies.
- Portuguese Traders
- Any Japanese clan that agrees to trade with the Portuguese converts to Catholicism as well.
- In the Britannia campaign, all factions are Catholic and religion is replaced by culture.
- Italian States
- Knights of St. John
- Naples & Sicily
- Gran Colombia
- New Spain