Marconi may refer to:

• Enrico Marconi (1792-1863) was an Italian-Polish architect.
• Guglielmo Marconi (1874–1937) was an Italian radio pioneer.
• Leandro Marconi (1834-1919) was a Polish architect, son of Enrico.
• Leonard Marconi (1835-1899) was a Polish architect and sculptor.
• Rocco Marconi (1490–1529) was an Italian painter.
• Władysław Marconi (1848-1915) was a Polish architect, son of Enrico.

• Marconi Company, a British telecommunications company; now part of General Electric Company (GEC)
  • Marconi Electronic Systems, the former defence arm of GEC
  • Marconi plc, the former telecommunications arm of GEC
• Marconi Corporation plc, a British telecommunications company formed by the 2003 restructuring of Marconi plc
  • Marconi Communications, the former telecommunications arm of GEC, now part of Marconi Corporation plc
• Marconi Instruments, a former British electronic instruments company
• Telent, a successor company of Marconi plc
• Alenia Marconi Systems, a former British-Italian defence electronics company
• Matra Marconi Space, a former Franco-British aerospace company
• Marconi Wireless Telegraph Company of America (1899–1919), a U.S. subsidiary of the parent British firm; now the Radio Corporation of America

• Marconi (crater), a lunar impact crater
• Marconi National Historic Sites of Canada, Nova Scotia
• Marconi, California, United States

• Marconi (Brescia Metro)
• Marconi (Rome Metro)
• Marconi (Turin Metro)

• Marconi (mountain), Peru
• Marconi (surname)
• Marconi-class submarine, Italian class of submarine
• Marconi University, Italy

• Marconi scandal was a British political scandal that broke in mid-1912.
• Marconi Station, a list of wireless stations
• Marconi Wireless Station Site (disambiguation)
• All pages with titles containing Marconi
• Marconia (disambiguation)