Josel of Rosheim (alternatively: Joselin, Joselmann, Yoselmann, , Joseph ben Gershon mi-Rosheim, or Joseph ben Gershon Loanz; c. 1480 – March, 1554) was the great advocate ("shtadlan") of the German and Polish Jews during the reigns of the Holy Roman Emperor Maximilian I and Charles V. Maximilian I appointed him as governor of all Jews of Germany, a position which was confirmed after his death by his grandson, Charles V.