Lamanna (also spelled LaManna) is an Italian surname. Notable people with the surname include:
César Lamanna (born 1987), Argentine footballer Eugenio Lamanna (born 1989), Italian footballer Franco Lamanna (born 1991), Uruguayan rugby union player Girolamo Lamanna (1580–1640), Italian painter Hugo Lamanna (1913–1991), Argentine footballer and manager Matt Lamanna, American paleontologist Ross LaManna, American screenwriter and author Janine LaManna (born 1966), American actress, voice actress and singer Santiago Lamanna (born 1992), Uruguayan footballer Stefan Lamanna (born 1995), Canadian soccer player