Osvaldo Oreste Guidi (born in Máximo Paz, Argentina on 10 March 1964 – died in Buenos Aires on 17 October 2011) was an Argentinian cinema, theater and television actor, and a dramaturge and theater director. He committed suicide by hanging. He studied acting and theater pedagogy and for twenty years engaged in teaching in his Buenos Aires theater studio. He appeared in many theater productions (as an actor, writer and director), films, and television series.