Otto I, Duke of Pomerania

Otto I (1279–1344) was the youngest, posthumous son of Duke Barnim I of Pomerania. His half-brother Bogislaw IV ruled during his minority; after their brother Barnim II died, the Treaty of Stettin in 1295 split the duchy, leaving Otto with Pomerania-Stettin and Bogislaw with Pomerania-Wolgast.

Otto drew close to Brandenburg, occupying much of the Uckermark during the Brandenburg succession crisis after 1319. From 1320 he ruled with his son Barnim III, and in 1338 Emperor Louis IV recognized Pomerania-Stettin's imperial immediacy. He died in 1344.