SS Andrea Doria was a luxury transatlantic ocean liner of the Italian Line, put into service in 1953. She is widely known from the extensive media coverage of her sinking in 1956, which included the remarkably successful rescue of 1,660 of her 1,706 passengers and crew.

An ocean liner is a type of passenger ship primarily used for transportation across seas or oceans. Ocean liners may also carry cargo or mail, and may sometimes be used for other purposes. Only one ocean liner remains in service today.