Lorenzoni is an Italian surname. Notable people with this surname include:
Giulia Lorenzoni (born 1940), Italian fencer Giuseppe Lorenzoni (1843–1914), Italian astronomer Michele Lorenzoni (17th century), Italian gunsmith based in Florence Nicolai Lorenzoni (born 1992), German-Swiss footballer Onyx Lorenzoni (born 1954), Brazilian politician, businessman, and veterinarian Pietro Antonio Lorenzoni (1721–1782), Austrian painter
See also 40447 Lorenzoni, a minore planet discovered on 11 September 1999, in Bologna, Italy Giardino Botanico Alpino "Giangio Lorenzoni", an alpine botanical garden located in Pian di Cansiglio, Province of Belluno, Italy