Italian submarine Guglielmo Marconi

Guglielmo Marconi was the name of at least two ships of the Italian Navy named in honour of Guglielmo Marconi and may refer to:


 * ITALIAN SUBMARINE Guglielmo Marconi, a Marconi-class submarine launched in 1939 and sunk in 1941.
 * ITALIAN SUBMARINE Guglielmo Marconi, a Sauro-class submarine launched in 1980 and decommissioned in 2003.