Andreini is an Italian surname. Notable people with the surname include:
Alfredo Andreini (1870–1943), Italian physician and entomologist and discoverer of 25 of the convex uniform honeycombs (also called Andreini tessellations) in 1900 Eddie Andreini (1937–2014), American aerobatic pilot Elios Andreini (1940–2022), Italian politician Francesco Andreini (c. 1548–1624), Italian actor Francesco Andreini (painter) (1697–1751), Italian painter Giambattista Andreini (1576–1654), Italian playwright and actor Isabella Andreini (1562–1604), Italian actress Marco Andreini (born 1961), retired Italian pole vaulter Matteo Andreini (born 1981), Sammarinese footballer Reno Andreini (1875-1880–after 1924), Italian operatic tenor Virginia Ramponi-Andreini, also known by her stage name "La Florinda" (1583–c.1630), celebrated Italian actress and singer
See also Villino Andreini, Art Nouveau villa in Grosseto, Italy