Eduardo Arnosi (November 6, 1924 in Buenos Aires, Argentina – December 23, 2012) was an Argentinian music critic, writer on music, and academic. He wrote articles on opera and classical music for the newspapers El Mundo and La Nación; notably penning an article in the latter publication on the Teatro Colón debuts of Maria Callas and Mario Del Monaco made in a 1949 production of Puccini's Turandot.^[1] For three decades he contributed articles about opera in Argentina to the magazines Opera News and Opera.^[2]

Arnosi penned several books on opera, including biographies on Titta Ruffo (Titta Ruffo: el titán de los baritones, Ediciones Ayer y Hoy de la Opera, 1977), Lauritz Melchior (Lauritz Melchior, el coloso wagneriano, Ars Lyrica, 1994), Claudia Muzio (Claudia Muzio, la única: en el cincuentenario de su muerte, Ars Lyrica, 1986), Beniamino Gigli and Julián Gayarre.^[1][2] In addition to writing, he taught for many years at the Instituto Universitario Nacional del Arte and had a twenty-year career hosting a variety of radio programs in Argentina.^[1]