Prince Józef Klemens Czartoryski (1740–1810) was a Polish nobleman (szlachcic) who owned Korets Castle.

He was a son of Prince Stanisław Kostka Czartoryski (a son of Prince Józef Czartoryski and Countess Teresa von Dönhoff) and Anna Rybińska (a daughter of Jakub Zygmunt Rybiński).

[1] He became the Grand Stalininkas of Lithuania in 1764, Klucznik (Steward) of Volhynia in 1772 and Starost and Wójt of Łuki and Radoszyce.

After 1797, he was engaged in making Kontusz sashes (Pas kontuszowy), for the nobility.

[2] From 1789 to 1790 he was the Polish envoy in Berlin and was heavily involved in forging the Polish–Prussian alliance.