Guglielmo Marsili

{{short description|Italian water polo player}}

{{Use dmy dates|date=December 2019}}

{{Infobox sportsperson

| name = Guglielmo Marsili

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| nationality = Italian

| sport = Water polo

| birth_date = {{birth date and age|1946|2|2|df=yes}}

| birth_place = Naples, Italy

| death_date =

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}}

Guglielmo Marsili (born 2 February 1946) is an Italian water polo player. He competed in the men's tournament at the 1972 Summer Olympics.{{cite Sports-Reference |url=https://www.sports-reference.com/olympics/athletes/ma/guglielmo-marsili-1.html |archive-url=https://web.archive.org/web/20200418014212/https://www.sports-reference.com/olympics/athletes/ma/guglielmo-marsili-1.html |url-status=dead |archive-date=18 April 2020 |title=Guglielmo Marsili Olympic Results |accessdate=3 December 2019}}