Plínio Marcos de Barros (29 September 1935 — 19 November 1999) was a Brazilian writer, actor, journalist and playwright,[1] author of several stage plays adapted into film.

Called a "Poète maudit" by some, his work features the life and struggles of underground characters, touching themes such as violence, prostitution and homosexuality, and was censored by the military government.

That same year, impressed by the true story of a young man gang-raped in prison, he wrote his first play, Barrela.

In 1965, he managed to stage Reportagem de um tempo mau, a collage of texts by several authors, and that was only one day in the theaters.

[4] Marcos was married to the actress Walderez de Barros, with whom he had three children, and with the journalist Vera Artaxo.