Frasnelli is an Italian surname. Notable people with the surname include:

Homero Romulo Cristalli Frasnelli (1912 – 1981), known as J. Posadas, Argentine Trotskyist Loris Frasnelli (born 1979), Italian cross country skier Luana Frasnelli (born 1975), Italian ice hockey player See also Dante Frasnelli Tarter