Marcello is a common masculine Italian given name. It is a variant of Marcellus. The Spanish and Portuguese version of the name is Marcelo, differing in having only one "l", while the Greek form is Markellos.
The name originally means like a hammer.
It is originally the adjectival form of Marcus, which means hammer; the -el suffix was in times of archaic Latin the adjectival form. It also sounds like mar 'cello'.
- Marcello Abbado (1926–2020), Italian pianist
- Marcello Boldrini (1890–1969), Italian statistician
- Marcello Borges (born 1997), American soccer player
- Marcello Caetano (1906–1980), Portuguese politician
- Marcello Campolonghi (born 1975), Italian footballer
- Marcello Castellini (born 1973), Italian footballer
- Marcello Cerruti (1808–1896), Italian diplomat and politician
- Marcello Ciorciolini (1922–2011), Italian director and screenwriter
- Marcello Dudovich (1878–1962), Italian painter and illustrator
- Marcello Fabbri (1923–2015), Italian poet
- Marcello Falzerano (born 1991), Italian footballer
- Marcello Fois (born 1960), Italian writer
- Marcello Gandini (born 1938), Italian car designer
- Marcello Giordani (1963–2019), Italian opera singer
- Marcello Lippi (born 1948), Italian football manager
- Marcello Malpighi (1628–1694), Italian biologist and physician
- Marcello Mastrilli (1603–1637), Italian Jesuit missionary
- Marcello Mastroianni (1924–1996), Italian actor
- Marcello Musto (born 1976), Canadian political scientist
- Marcello Pacifico (born 1977), Italian trade unionist
- Marcello Pera (born 1943), Italian philosopher and politician
- Marcello Planca, Italian Roman Catholic bishop
- Marcello Possenti (born 1992), Italian footballer
- Marcello D. Rapp, bass guitarist for American alternative rock band Against All Will
- Marcello Siniscalco (1924–2013), Italian scientist
- Marcello Spatafora (born 1941), Italian diplomat
- Marcello Stefanini (1938–1994), Italian politician
- Marcello Thedford, American actor
- Marcello Trotta (born 1992), Italian footballer
- Marcello Varallo (born 1947), Italian alpine skier
- Marcello Veneziale (born 1941), Italian magistrate and politician
- Marcello Venusti (1512–1579), Italian painter
- Marcello Violi (born 1993), Italian rugby union player
In music
- Alessandro Marcello, Italian nobleman and dilettante who dabbled in various areas, especially music
- Benedetto Marcello, brother of Alessandro, Italian composer, writer, advocate, magistrate, and teacher
- Rosanna Scalfi Marcello, composer, singer, and wife of Benedetto Marcello
- Kee Marcello, former guitarist in the Swedish hard rock band Europe
- Rob Marcello, the current guitarist of the band Danger Danger