Bogislav IX (German: Bogislaw IX., Polish: Bogusław IX; 1407/1410 – 7 December 1446), was a duke of Pomerania in Pomerania-Stolp, whose residence was Stargard.

In 1439 his first cousin Eric of Pomerania tried in vain to have him recognised as Erik's heir to the Kalmar Union.

[1] They had daughters, Sophia, who married Eric II, Duke of Pomerania, and Alexandra, and at least one of unknown name.

[2] During the Polish–Teutonic War (1431–1435), Bogislav opposed the Teutonic Knights and supported the Kingdom of Poland.

Upon his death in 1446, Bogislav IX was succeeded in Pomerania-Stolp by Eric of Pomerania, who ruled as "Erik I".