Jan Polack (Latin: Ioannes Polonus, also spelled Hanns Polagk, Polegk; born 1435/1450 – 1519) was a 15th-century painter.

He may have taken part in the 1475 festival of the Landshut Wedding of Jadwiga Jagiellon and George of Bavaria.

Starting in 1482, he is listed on the tax records of Munich, also as leader of the local painter guild.

He visited with Michael Wohlgemuth and his art was influenced by him and by that of Veit Stoss and Hans Pleydenwurff as well as by collaboration with the woodcutter Erasmus Grasser.

His most important remaining work is the Weihenstephan altarpiece (1483–1485), now at the Alte Pinakothek in Munich.