Lord John V of Werle[-Güstrow] (born: between 1338 and 1340; died: before 9 September 1378) was co-regent of Werle-Güstrow from 1365 until his death.
He was the youngest son of Nicholas III Werle-Güstrow and his wife Agnes.
On 21 September 1365, Lorentz and John signed a deed together, suggesting that at that time, they were ruling jointly.
He married Euphemia, daughter of Henry III, Duke of Mecklenburg, but he remained childless and died young, before 9 September 1378.
This article about a member of the German nobility is a stub.