Villanueva Félix Cosse Vega (born 9 November 1933) is a Uruguayan actor, theater director, and writer who has developed a distinguished career in his country and internationally, especially in Argentina, where he has lived since 1973.

He began his theatrical training at the El Galpón theater [es] in Montevideo in 1953, continued his studies at the Multidisciplinary School of Dramatic Art (EMAD) in Montevideo until graduating in 1963, and attended Jacques Lecoq's School of Mime and Theater in Paris.

[1][2] Since 1956 he has performed in more than 60 plays in Uruguay and Argentina, taken part in 20 feature films, and in numerous television series and specials.

He wrote the musical comedy ¿Quién le teme a Lucila Singer?, performed at the Embassy Theater; Feria del miedo, del amor y de la guerra, performed at the San Martín Theater; Compañero del alma in co-authorship with Adriana Genta [es], edited by Torres Agüero (1992), and performed at La Campana and El Galpón theaters.

In Argentina he worked as an actor and director – in 1975, in Querido Mentiroso as George Bernard Shaw, antagonist of China Zorrilla in the role of Mrs Patrick Campbell,[4] and then directing Servant of Two Masters, produced by the actress.