Giovanni Stefano Ajazza or Giovanni Stefano Agathia or Giovanni Stefano Aiazza (1550âÂÂ1618) was a Roman Catholic prelate who served as Bishop of Asti (1596âÂÂ1618).
Giovanni Stefano Ajazza was born in Vercellen in 1550. On 13 May 1596, he was appointed during the papacy of Pope Clement VIII as Bishop of Asti. He served as Bishop of Asti until his death in 1618.