Guidi is an Italian surname shared by several notable people:
Domenico Guidi (1625–1701), Italian sculptorCarlo Alessandro Guidi (1650–1712), Italian lyric poetIgnazio Guidi (1844–1935), Italian orientalistGuido Buffarini Guidi (1895–1945), Italian politician active during the Second World WarJuan Héctor Guidi (1930–1973), Argentine footballerPeter Guidi (born 1949), American jazz musicianFabrizio Guidi (born 1972), Italian cyclistGuido Guidi (fl. 20th century), Italian comic book artist and pencillerEmanuele Guidi (born 1969), Sammarinese archer