Petrov's family said he died today in a Sofia hospital following a stroke.
Valeri Nissim Mevorah, better known by his pen-name, Valeri Petrov, was born on April 22, 1920, in Sofia to a Jewish father and Bulgarian mother.
Besides poems, novels and translations from Russian, Italian and English, Petrov authored numerous film scripts and plays both for adults and children.
During World War II he took part in the resistance against the pro-Nazi regime and remained close to left-wing political thought through his life.
Funeral arrangements haven't been announced.