The Guglielmo Marconi Memorial is a public artwork by Attilio Piccirilli, located at the intersection of 16th and Lamont Streets NW in the Mount Pleasant neighborhood of Washington, D.C. It stands as a tribute to Italian inventor Guglielmo Marconi, whose work with telegraphy and radio waves led to the creation and popularity of the radio. It was paid for by public subscription and erected in 1941. The artwork was listed on both the District of Columbia Inventory of Historic Sites and the National Register of Historic Places in 2007. It is a contributing property to the Mount Pleasant Historic District.

Attilio Piccirilli was an American sculptor. Born in Massa, Italy, he was educated at the Accademia di San Luca of Rome.