John I of Werle

John I (c. 1245–1283) was the eldest son of Nicholas I, lord of Werle, and Jutta of Anhalt. After his father's death in 1277 he ruled Werle jointly with his brothers Henry I and Bernard I until the family divided its lands in 1281, when John took Werle-Parchim.

He married Sophia, daughter of Count Gunther of Lindow-Ruppin, and was buried in Doberan Minster. His son Nicholas II later reunited the Werle lands.