The Cathedral of St. James (Croatian: Katedrala sv. Jakova) in Sibenik, Croatia is a triple-nave basilica with three apses and a dome (32 m high inside) in the city of Sibenik, Croatia. It is the church of the Catholic Church in Croatia, and the see of the Sibenik diocese. It is also the most important architectural monument of the Renaissance in the entire country. Since 2000, the Cathedral has been on the UNESCO World Heritage List.
It is often mistakenly known as "St Jacob's", because Croatian, like many other languages, uses the same name for both "James" and "Jacob". It is dedicated to Saint James the Greater.