Alfonso Sastre (20 February 1926 – 17 September 2021) was a Spanish playwright, essayist, and critic. He was part of the Generation of '36 movement. He was a critic of censorship during the Francisco Franco dictatorship. His best known plays include Death Squad (1953), The Gag (1954), Death Thrust (1960), and Tragicomedy of the Gypsy Celestina (1984). He was born in Madrid.