Prince Augustyn Józef Czartoryski (10 October 1907 – 1 July 1946) was a Polish noble (szlachcic). He was the son of Prince Adam Ludwik Czartoryski (and grandson of Princess Marguerite Adélaïde of Orléans) and Countess Maria Ludwika Krasińska.
After the death of his father, Prince Augustyn took over the running of the Family Museum and became ordynat of the Sieniawa Ordynacja properties. On 12 August 1937, he married Princess Maria de los Dolores of Borbon y Orleans, daughter of Prince Carlos of Bourbon, Infante of Spain and Princess Louise of Orléans.
Due to the prospect of war, the most precious objects were transported to Sieniawa Palace and walled up: