Maria Antonia of Spain (María Antonia Fernanda; 17 November 1729 – 19 September 1785) was an Infanta of Spain and the youngest daughter of Philip V of Spain and Elisabeth Farnese. She was the wife of Victor Amadeus III of Sardinia whom she married in 1750. She was the mother of the last three mainline Kings of Sardinia. In Italy she is known as Maria Antonietta but sometimes known "incorrectly" as Maria Ferdinanda. Her name was Maria Antonia Fernanda. 