Filipecz de Prosznicz; 1431 – 28 June 1509) was an advisor of the kings Matthias Corvinus and Vladislaus II of Bohemia and Hungary.

In 1480, he mediated in a conflict between King Vladislaus II of Bohemia and the Utraquist citizens of Prague.

After the death of bishop Protasius of Olomouc in 1482, the cathedral chapter could not agree on the election of a successor.

As administrator, John introduced economic measures to counter the destruction brought about by the Hussite Wars.

He restored the Cathedral of Olomouc and other episcopal buildings and expanded the castles at Vyškov and Mírov.

He promoted humanism in Moravia by founding a printing company in Brno, which published important humanistic works.

John was accused of advocacy for the utraquist case and Pope Innocent VIII ordered an investigation by the papal nuncio in Buda.

The pope gave his permission on 3 June 1489 and appointed Ardicino della Porta as the new administrator.