Fanti is an Italian surname. Notable people with this name include:

• Bartolomeo Fanti (1428–1495), beatified Italian Carmelite priest
• Fausto Fanti (1978–2014), Brazilian actor, comedian and musician
• Franco Fanti (1924–2007), Italian Olympic cyclist
• Gabriele Fanti (born 2000), Italian footballer
• Gaetano Fanti (1687–1759), Italian fresco painter
• Guido Fanti (1925–2012), Italian politician
• Manfredo Fanti (1806–1865), Italian general
• Maria Pia Fanti (born 1957), Italian control theorist
• Nick Fanti (born 1996), American baseball player
• Ryan Fanti (born 1999), Canadian ice hockey player
• Silvio Fanti (1919–1997), Swiss psychiatrist

A variant of this name, DeFanti, is the surname of:

• Paul DeFanti, fictional recipient of the Ig Nobel Prize
• Thomas A. DeFanti (born 1948), American computer graphics researcher