Luigi Mancinelli (Italian pronunciation: [luˈiːdʒi mantʃiˈnɛlli]; 5 February 1848 – 2 February 1921) was an Italian conductor, cellist and composer. His early career was in Italy, where he established a reputation in Perugia and then Bologna. After 1886 he worked mostly in other countries, as principal conductor at the Royal Opera House, Covent Garden in London and at the Metropolitan Opera in New York, and in other appointments in Madrid, Rio de Janeiro and Buenos Aires.