Namesakes
Italian Presidents and Prime Ministers:
1 prime minister, 1 prime minister/president
(prime minister) Luigi Carlo Farini 1862-1863 
(prime minister/president) Carlo Azeglio Ciampi 1993-1994; 1999-2006
Nobel Prize Winners:
1 physics
(physics) Carlo Rubbia 1984
Notable Actors and Entertainers:
1 actor
Bud Spencer (a.k.a. Carlo) 1929-2016
Notable Athletes:
1 skiing, 1 soccer
(soccer) Carlo Costly 1982-
(skiing) Carlo Janka 1986-
Notable Evildoers:
1 criminal
Charles Ponzi (a.k.a. Carlo) 1882-1949
Notable Filmmakers:
1 director/screenwriter, 1 producer
Carlo Ponti 1912-2007
Carlo Lizzani 1922-2013
Notable Musicians:
1 composer, 1 singer
Farinelli (a.k.a. Carlo) 1705-1782
Carlo Siliotto 1950-
Notable Scientists and Inventors:
1 physicist
Carlo Rubbia 1934-
Notable Writers:
1 author, 1 playwright
Carlo Goldoni 1707-1793
Carlo Collodi 1826-1890
Olympic Medalists:
2 bronze, 2 gold, 1 gold/bronze
(bronze) Carlo Monti 1948 4x100 m relay
(bronze) Carlo Peretti 1952 water polo
(gold/bronze) Carlo Silipo 1992; 1996 water polo
(gold) Carlo Janka 2010 alpine skiing
(gold) Carlo Molfetta 2012 taekwondo
Saints:
2 blessed, 2 saints
Saint Carlo Borromeo 1538-1584
Saint Carlo of Sezze 1616-1670
Blessed Andrea Carlo Ferrari 1850-1921
Blessed Carlo Acutis 1991-2006