Alfonso Paso (12 September 1926 – 10 July 1978) was a Spanish dramatist. He wrote over a hundred plays, mainly light comedies, sometimes laced with black humour and tragedy. There were also police dramas and examples of what he called "social theatre". He was known for the well crafted complexity of his plots and for the originality of his situations and characters.

Alfonso Paso Gil was born into a "theatre dynasty" in Madrid. His father was the Zarzuela playwright and librettist Antonio Paso y Cano (1878–1950). His mother was the actress Juana Gil.