Martinelli is a surname of Italian origin. The name refers to:
Martinelli (band), italo-disco band of the 1980s
Alberto Martinelli (contemporary), world known scholar of social sciences
Alessandro Martinelli, Swiss footballer
Alfredo Martinelli (1899–1968), Italian film actor
Antonio Martinelli (c. 1702-82), Italian violinist and composer
Anton Erhard Martinelli (1684–1747), Austrian architect
Daniele Martinelli (disambiguation), multiple people
Dario Martinelli (b. 1974), Italian musicologist and composer
Domenico Martinelli (1650–1719), Italian architect (active in Austria))
Elsa Martinelli (b. 1932 or 1935), Italian actress and fashion model
Enzo Martinelli Mathematician
Francesca Martinelli (b. 1971), Italian ski mountaineer
Franz Martinelli (1651–1708), Italian architect (active in Austria)
Fred Martinelli (b. 1929), American college football coach
Gabriella Martinelli (contemporary), Italian-Canadian film and television producer
Giovanni Martinelli (1600–1659), Italian painter of the Baroque era
Giovanni Martinelli (1885–1969), Italian operatic tenor
Giovanni Innocenzo Martinelli (b. 1942), Libyan bishop
Giuseppe Martinelli (b. 1955), Italian professional road bicycle racer
Joe Martinelli (b. 1916, unknown if still living), American professional soccer player
Johann Baptist Martinelli (1701–1754), Austrian architect
Julien Martinelli (b. 1980), French professional football player
Liliana Martinelli (b. 1970), Argentine discus thrower
Luca Martinelli (b. 1988), Italian professional football player
Luigi Martinelli (b. 1970), Italian professional football player
Marco Martinelli (b. 1965), Italian professional volleyball player
Paolo Martinelli (b. 1952), Italian automotive engineer for Ferrari
Ricardo Martinelli (b. 1952), President of Panama (2009-2014)
Sebastiano Martinelli (1848–1918), Italian Roman Catholic cardinal
Sheri Martinelli (1918–1996), American painter and poet
Tommaso Martinelli (1827–1888), Italian Roman Catholic cardinal
Tristano Martinelli (1555–1630), Italian actor in the commedia dell’arte tradition, probably the first to be called “Harlequin”