There are numerous companies that offer cruises around the world. Here are some of the major cruise line companies:
Carnival Corporation & plc: Carnival Cruise Line, Princess Cruises, Holland America Line, Seabourn Cruise Line, Costa Cruises, P&O Cruises, Cunard Line, AIDA Cruises.
Royal Caribbean Group: Royal Caribbean International, Celebrity Cruises, Azamara, Silversea Cruises.
Norwegian Cruise Line Holdings Ltd: Norwegian Cruise Line, Oceania Cruises, Regent Seven Seas Cruises.
MSC Cruises: MSC Cruises.
Disney Cruise Line: Disney Cruise Line.
Viking Cruises: Viking Ocean Cruises, Viking River Cruises.
Cunard Line: Cunard Line.
Princess Cruises: Princess Cruises.
Holland America Line: Holland America Line.
Seabourn Cruise Line: Seabourn Cruise Line.
Costa Cruises: Costa Cruises.
These are just a few examples, and there are several other smaller or niche cruise lines that offer specialized itineraries and experiences. Each cruise line has its own unique features, onboard amenities, itineraries, and target audiences, so it’s important to research and compare the offerings of different cruise lines to find the one that suits your preferences and needs.