Holland America Line, headquartered in Seattle, Washington, is a cruise ship line, originally an operator of passenger and cargo ships. Founded in 1873 as the Netherlands-America Steamship Company, the company ran regular trans-Atlantic service between the Netherlands and the United States, and later to the Dutch East Indies as well. The company's naming scheme for its ships, where the names of cargo vessels ended in -dyk or -dijk and the names of passenger ships ended in -dam, has survived to the present and even given rise to the company's "Dam Ships" merchandise line. Holland America was acquired by Carnival Corporation in 1989.Holland America Line produced some noted ships from the 36,000 gross ton Nieuw Amsterdam of 1938, probably the only large passenger liner at the time that was not completed with any expectation of serving for the military, and the beautiful Rotterdam of 1959, one of the first ships on the North Atlantic to be equipped for two class transatlantic crossing and one class luxury cruising. By the late sixties, the golden era of profitable trans-Atlantic ships was over, and the remaining routes were siphoned off by the airlines. The early seventies saw the end of the trans-Atlantic service, leaving the North Atlantic for Cunard's Queen Elizabeth 2.

In 1971, Holland America abandoned its passenger transportation service and switched to running cruise ships full time. Since then, the company has become known for wide variety of destinations it sails to. After obtaining government approval to visit Antarctica in the 1980s, the line now visits all seven continents. Its ms Prinsendam makes annual "Grand Voyages" that usually last more than 60 days. These explore and circle more exotic destinations such as South America and Africa. Due to the increasing popularity of the exotic and rarely-visited ports of call featured on Grand World Voyages, the ms Amsterdam will offer the Grand World Voyage in addition to the Prinsendam's Grand Voyages in 2007 and 2008. 2008 is also the 50th anniversary of Holland America Line's Grand World Voyage and will feature a true circumnavigation of the globe. In 2009, the sister-ship to the ms Amsterdam, ms Rotterdam will complete the Grand World Voyage.

As of 2006, the line operates thirteen ships, ranging from the smaller and older S-Class vessels; the mid-range R-Class; the line's newest and largest vessels, the Vista-Class; and the small 793-passenger Prinsendam (originally the Royal Viking Sun, then Seabourn Sun until HAL's purchase of the vessel in 2002). The line has also announced that work has begun on its new line of vessels, the Signature-Class, with one firm order for a ship named the Eurodam to be delivered in mid-2008, and an option for an additional as of yet un-named vessel to be delivered in 2010. Like most of HAL's recent ships, the new Signature-Class will be built at the Fincantieri shipyards outside Venice. All HAL ships have a dark blue hull with white superstructure, with the line's logo featured prominently on the functional smoke stacks.

In addition to its fleet of cruise ships, Holland America also owns the Westmark hotel chain which operates in Alaska and the Yukon, the bus companies Gray Line of Seattle and Gray Line of Alaska, and Worldwide Shore Services, which provides warehouse and logistical support for the company. HAL shares its headquarters in Seattle's Lower Queen Anne district with the above mentioned subsidiaries. Finally, HAL owns "Half Moon Cay" (its own private island in the Caribbean, officially known as Little San Salvador Island); nearly all of the line's cruises through the region spend at least a day there.