In 2026, Carnival Corporation & plc remains the cruise line with the largest overall market share, controlling approximately 40% of the global cruise market by passenger volume. This is because Carnival Corporation is a massive parent company that owns nine distinct brands, including Carnival Cruise Line, Princess Cruises, Holland America Line, and Costa Cruises. If you look at individual brands, however, Royal Caribbean International (the core brand of Royal Caribbean Group) holds the highest market share for a single brand, particularly in the "Mega-Ship" and North American markets. In 2026, Royal Caribbean reported annual revenues of over $17.4 billion, a record-breaking figure driven by the success of its "Icon-class" and "Utopia-class" ships, which are currently the largest and most popular in the world. While Carnival wins on "total fleet size" and "total passengers" across its diverse portfolio, Royal Caribbean is currently the industry's "revenue leader," capturing a larger share of the high-spend, multi-generational family market that has come to define the modern 2026 cruising experience.