Grand Princess is a Grand-class cruise ship owned by Princess Cruises. It was built in 1998 by Fincantieri Cantieri Navali Italiani in Monfalcone, Italy, with yard number 5956, at a cost of approximately US$450 million. She was the largest and most expensive passenger ship ever built at the time. Grand Princess was the flagship in the Princess Cruises fleet until the new Royal Princess took that title in June 2013.

The Grand class is a class of cruise ships. Ships in the class are operated by the cruise lines Princess Cruises, P&O Cruises and P&O Cruises Australia. The class consists of several series (subclasses) of sister ships, most of which were built by Fincantieri in Monfalcone and Trieste, northern Italy. The first vessel of the original Grand class, Grand Princess, entered service in 1998.