Marconi shared the Nobel Prize in Physics with Karl Ferdinand Braun for their contributions to the development of wireless telegraphy. This prestigious award recognized the significance of their work and its impact on global communication.

Marconi was appointed an Honorary Knight Grand Cross of the Royal Victorian Order (GCVO) by King George V of the United Kingdom. This honor recognized his contributions to the British Empire and his role in advancing wireless communication.

Marconi was appointed a Senator of the Kingdom of Italy. This appointment reflected his prominence and influence in Italian society.

Marconi was ennobled as Marchese (Marquess) by King Victor Emmanuel III of Italy. This title further recognized his contributions and elevated his social status.

Numerous institutions, streets, and awards have been named in Marconi's honor, commemorating his contributions to science and technology. He is widely regarded as one of the most important figures in the history of telecommunications.