Royal Caribbean International (RCI), previously known as Royal Caribbean Cruise Line (RCCL), is a cruise line brand founded in 1968 in Norway and organized as a wholly owned subsidiary of Royal Caribbean Group since 1997. Based in Miami, Florida, 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. As of January 2024, the line operates 28 ships and has three additional ships on order.

MS Sovereign was one of three large cruise ships of the Sovereign class operated by Pullmantur Cruises and formerly by Royal Caribbean International. When she was completed in 1987, Sovereign of the Seas was the world's largest passenger ship. On 24 June 2020, due to economic losses caused by COVID-19 pandemic, Sovereign arrived and was beached at Aliağa, Turkey, where she was dismantled.