Merli is an Italian surname. Notable people with the surname include:
Adalberto Maria Merli (born 1938), Italian actorDanio Merli (born 1956), Italian sprint canoeistFrancesco Merli (1887–1976), Italian opera singerFranco Merli (born 1956), Italian actorGino J. Merli (1924–2002), United States Army Medal of Honor recipientMaurizio Merli (1940–1989), Italian actorReidar Merli (1917–2007), Norwegian wrestlerSimone Merli, Italian Electronic musician and Music producerMerli is also the name of a Vocaloid character.Merlí is a television series produced by Catalan channel TV3.