Ulyses Petit de Murat (28 January 1907 – 19 August 1983) was an Argentine poet and screenwriter. He wrote the script for The Gaucho War (1942) with Homero Manzi based on the 1905 novel by Leopoldo Lugones. At the 1943 Argentine Film Critics Association Awards, Murat and Manzi won the Silver Condor Award for Best Adapted Screenplay for their screenplay of the film which proved highly successful. His poem "Graciela Oscura" was set to music by Astor Piazzolla for the film Extraña ternura; this song was repeated several times in the movie, and was reported to be the main attraction of the film when it opened at Cine Monumental in the spring of 1964.