SS Guglielmo Marconi was an Italian ocean liner launched on 24 September 1961 for Lloyd Triestino's Genoa—Sydney service.

Guglielmo Marconi left Genoa on her maiden voyage on November 18th 1963.

In 1976, Guglielmo Marconi was transferred to the Naples-Brazil-River Plate service of Italian Line.

[2] In 1993, American Family Cruises was launched, a joint venture between Costa and Bruce Nierenburg, to operate cruises aimed at young American families with children.

AFC were not successful, and the ship sailed for Genoa in September 1994 where she was converted back to the Costa Riviera, and began cruising her last years in Europe.