Mannelli is an Italian surname. Notable people with the surname include:
Caesar Mannelli (1897–1936), American rugby union player Carlo Mannelli (1640–1697), Italian violinist, castrato and composer Francesco Mannelli (c. 1595–1667), Italian Baroque composer, particularly of opera, and theorbo player Luca Mannelli (c. 1265–1364), Italian classicist and archbishop Luigi Mannelli (1939–2017), Italian water polo player Massimo Mannelli (born 1956), Italian golfer Maurizio Mannelli (1930–2014), Italian water polo player Riccardo Mannelli (born 1955), Italian artist and illustrator
See also Manelli