Royal Caribbean International (RCI, formerly Royal Caribbean Cruise Line (RCCL)), is a cruise line brand founded in 1968 in Norway and organised as a wholly owned subsidiary of Royal Caribbean Cruises Ltd. (RCCL) since 1997. Based in Miami, Florida, United States, it is the largest cruise line by revenue and second largest by passengers counts. In 2018, Royal Caribbean International controlled 19.2% of the worldwide cruise market by passengers and 14.0% by revenue.

It also operates the four largest passenger ships in the world. As of July 2019, the line operates twenty-six ships and has six additional ships on order.