Lorenzi is a surname, and may refer to:
- Benito Lorenzi (1925 – 2007, an Italian football player
- Gianluca de Lorenzi (1972+), an Italian auto racing driver
- Giovanni Battista Lorenzi (1721 – 1807), an Italian librettist
- Grégory Lorenzi (1983+), a French football player
- Harri Lorenzi (1949+), a Brazilian agronomic engineer
- Marie-Laure de Lorenzi (1961+), a French professional golfer
- Milton Lorenzi Haney (1825 – 1922), a regimental chaplain in the United States Army
- Paolo Lorenzi (1981+), an Italian professional tennis player
- Stefano Lorenzi (1977+), an Italian professional football player
- Stoldo Lorenzi (1534 – after 1583), an Italian Mannerist sculptor