Tui Cruises, Scenic Luxury Cruises & Tours and Emerald Waterways have become global members of Cruise Lines International Association (Clia).
The new additions take the number of Clia cruise line members to 31.
Previously, the lines were European regional cruise line members.
President and chief executive Cindy D’Aoust said: “As the global cruise industry continues to thrive, Clia is honoured to welcome prestigious cruise lines TUI Cruises, Scenic Luxury Cruises & Tours, and Emerald Waterways as global cruise line members.
“Clia’s global cruise line members play a critical role not only our organisation, but the cruise community as a whole and every cruise line member is vital in propelling our industry forward.”