Jan Kanty Moszyński (c. 1690 – 14 September 1737) was a Polish-Lithuanian nobleman and politician, Treasurer of the Crown Court from 1729.
He came from a poor noble family but married the daughter of Augustus II the Strong.
His grandfather was Andrzej Ludwik Moszyński (died 1683).
His father, Aleksander Michał, lived in a small village in Podlasie and served as its treasurer.
This biographical article about a Polish politician is a stub.