Alfonso Vallejo (born 1943, Santander) is a Spanish playwright, poet, painter and neurologist. He has 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".