Néstor Osvaldo Perlongher (Avellaneda, December 25, 1949 – São Paulo, November 26, 1992) was an Argentine poet, writer, journalist, sociologist, and LGBT activist who lived in Brazil from 1982.

He was one of the founders and a leading figure of the Argentine Homosexual Liberation Front, one of the first LGBT organizations in the world, and was known as one of the most provocative poets in Argentine literature due to the explicitness and sensitivity of his poems. Among his most notable works is the epic poem "Cadáveres" (Corpses), in which he denounces the crimes against humanity perpetrated by the last Argentine military dictatorship, written during his exile in Brazil in 1981.