Alfonso Rodríguez Vallejo (19 August 1943 – 3 December 2021) was a Spanish playwright, poet, painter and neurologist. He had published 34 plays and 25 poetry books. Vallejo was awarded the Lope de Vega prize in 1976 for his play "El desgüace". "Ácido Sulfúrico" was the runner up prize in 1975. In 1978 he received the Internacional Tirso de Molina prize for his work A Tumba Abierta. The Spanish Royal Academy (Real Academia Española), in 1981, awarded Vallejo the Fastenrath Award for "El cero transparente".