Crystal Cruise Lines, most commonly seen as Crystal Cruises, is a luxury cruise line founded in 1988 and notable for its two medium-sized, high-end ships, Crystal Symphony and Crystal Serenity, which each hold about 1,000 guests.

The line is a wholly-owned subsidiary of the large Japanese shipping company Nippon Yusen Kaisha. The Crystal passenger mix is about 70% North American, with about half of those from California. The line has its headquarters in Century City, Los Angeles. Readers of Condé Nast Traveler have voted the line Best Large-Ship Cruise Line for 16 years. Readers of Travel + Leisure have voted Crystal Cruises World's Best for 15 consecutive years. Guidebooks usually score the three ships among the top 20 of all cruise ships afloat. Both ships travel the world and visit destinations. The line offers Mediterranean cruises, Northern European cruises, Australia & New Zealand cruises, Canada & New England cruises, Panama Canal cruises, Caribbean cruises and Mexico cruises. The luxury cruise line also offers a World Cruise on the Crystal Serenity each year of about 110 days in length.