John I of Mecklenburg-Stargard

John I of Mecklenburg-Stargard (1326 – 1392/93) was the youngest son of Henry II the Lion and Anna of Saxe-Wittenberg. His father died in 1329, and John remained under guardianship until 1344. In 1348 Emperor Charles IV raised him and his brother Albert II to ducal rank.

The brothers first backed the False Waldemar against Margrave Louis V of Bavaria, making peace in 1350 when the emperor withdrew his support. In the division of Mecklenburg on 25 November 1352 John received Stargard and Sternberg, founding the Mecklenburg-Stargard line.

He backed his nephew Albert III's bid for the Swedish throne. By February 1393 his sons John II and Ulrich I were ruling in his place.