The Münster Diocesan Feud (German: Münsterische Stiftsfehde), or simply Münster Feud, was a dispute that took place between 1450 and 1457 over the appointment to the bishop's throne in Münster, and hence the rule of the diocese. The opposing candidates were Walram of Moers and Eric of Hoya. They were supported by their families with Count John of Hoya and Archbishop Dietrich II of Moers at their respective heads. In addition, there were also external allies. Within the diocese the Stände, namely the cathedral chapter and the town of Münster, played an independent role at times. In the end neither candidate was able to succeed to the office.
The Diocese of Münster was one of the largest and most important ecclesial territories in the northwest German area. In the Late Middle Ages the bishop's thrones in the region were predominantly filled by members of comital families or the families of hereditary noblemen (Edelherren). These families, like the counts of the Mark, attempted to secure episcopal seats for their sons. Even less powerful families took the opportunity to increase their influence, at least occasionally, over an ecclesial territory. To this group belonged the lords of Lippe, who occupied the bishop's throne in Paderborn several times. The counts of Hoya were successful in the Bishopric of Osnabrück. In the Bishopric of Minden this was true of the houses of Diepholz and Schaumburg. In the mid-15th century, however, the counts of Moers were foremost in this regard. Especially after Dietrich of Moers had become Archbishop of Cologne, the family was able to secure the majority of the bishop's seats in the northwest German area. Their main rival in the Bishopric of Münster was the Hoya family.