Hossein Yari was born in 1968 in Tehran, Iran. He started acting in theatre first, then joined the Iranian TV. The TV series Shabe Dahom (The Tenth Night), directed by Hassan Fathi, owes much of its popularity to Yari's performance. Yari won the best actor in a leading role for his performance in maturity 1999.
In 2005, Yari starred in the internationally acclaimed film Dame sobh (Day Break) as a prisoner on Death Row whose execution (with the slim chance of a pardoning) keeps getting postponed.