Ustazade Silvestre de Sacy (17 October 1801 – 14 February 1879) was a French journalist.

He was born in Paris, the son of the linguist Antoine-Isaac Silvestre de Sacy (1758-1838), who in 1813, was created a baron by Napoleon.

His name "Ustazade" means "son of the master" in Persian, presumably due to his father's status as a celebrated orientalist.

From 1828 to 1877, he was a literary and political contributor to the Journal des Débats.

He became a curator at the Bibliothèque Mazarine in 1836 and became its administrator in 1848.