Tadeusz Antoni Mostowski (19 October 1766 in Warsaw – 6 December 1842 in Paris) was a Polish writer, journalist, literary critic and politician.
During the period of the Targowica Confederation he left Poland; eventually arriving in Paris, where he became a mediator in talks between Polish emigrants and French revolutionary authorities.
While in that position, he helped promote construction of the Augustów Canal and established the Instytut Agronomiczny [pl] (Agronomic Institute) in Marymont.
During those years, he remained active as a writer; publishing literary criticism and theatre reviews in numerous Warsaw journals.
[3] When the uprising had been quashed, the Russian authorities allowed him to emigrate to France, where he owned lands inherited from his father.