Marconi is a surname. Notable people with the surname include:
Alfonso Marconi (1865–1936), Italian businessman and collector
Andrea Marconi (born 1985) Italian footballer
David Marconi, American screenwriter
Dominic Anthony Marconi (born 1927), American Roman Catholic bishop
Enrico Marconi, also known as Henryk Marconi (1792–1863), Italian architect
Francesco Marconi (1853 or 1855–1916), Italian operatic tenor
Gaudenzio Marconi (1841–1885), Italian photographer
Gioia Marconi Braga (1916−1996), daughter of Guglielmo Marconi, founder and chairwoman of the Marconi Foundation
Gloria Marconi (born 1968), Italian long-distance runner
Guglielmo Marconi (1874–1937), Italian electrical engineer and inventor of radio
Ivan Marconi (born 1989), Italian footballer
Juan Martínez Marconi (born 1982), Chilean footballer
Joe Marconi (1934–1992), American football fullback
Leandro Marconi (1834–1919), architect, son of Enrico Marconi
Leonard Marconi (1835–1899), Polish and Austro-Hungarian architect and sculptor
Lou Marconi (born 1973), American professional wrestler, trainer, and occasional actor
Maria Marconi (born 1984), Italian diver
Michele Marconi (born 1989), Italian footballer
Nicola Marconi (born 1978), Italian diver
Rocco Marconi (before 1490–1529), Italian painter
Saverio Marconi (born 1948), former Italian actor and stage director
Tommaso Marconi (born 1982), Italian diver
