Gialdino Gialdini (10 November 1842 – 6 March 1919) was an Italian composer and orchestra conductor.Gialdini was born in Pescia, Tuscany, and studied at Florence with Teodulo Mabellini. He won a prize offered by the Pergola Theatre of that city for the best opera, with Rosmunda, which met, however, with an unfavorable reception when produced in 1868. After two more operas he tired of composing operas and started conducting opera productions, to international acclaim.