| Barnim IV of Pomerania | |
| Father: | Wartislaw IV, Duke of Pomerania |
| Mother: | Elisabeth of Lindow-Ruppin |
| Spouse: | Sophie of Werle |
| Issue: | Wartislaw VI Bogislaw VI Elisabeth |
| Birth Date: | 1325 |
| Death Date: | 22 August 1365 |
| Noble Family: | House of Griffin |
Barnim IV of Pomerania (1325 - 22 August 1365) was a Duke of Pomerania-Wolgast-Rügen.
He was the second son of Duke Wartislaw IV of Pomerania-Wolgast and the brother of Bogislaw V and Wartislaw V.
He married Sophie of Werle (1329–1364), the daughter of John II of Werle. They had two sons, Wartislaw VI and Bogislaw VI, and a daughter, Elisabeth, who married Duke Magnus I of Mecklenburg.
He inherited Pomerania-Wolgast-Rügen when his father died in 1326. He was one year old at the time. He shared a guardian with his brother Bogislaw V, Duke of Pomerania-Wolgast-Rügen.
Emperor Charles IV granted Barnim IV Imperial immediacy in 1348.