Ludolph of Ratzeburg was a Premonstratensian prelate who served as the bishop of the newly established Prince-Bishopric of Ratzeburg starting in 1236. His tenure was marked by significant political struggle, specifically a confrontation with Duke Albert I of Saxony. This conflict resulted in his imprisonment and physical abuse. Following his release, he lived in exile under the protection of Duke John of Mecklenburg, eventually passing away in Wismar around 1250 due to the injuries sustained during his captivity.