Leopold IV, Prince of Lippe

Leopold IV
Prince of Lippe
Reign25 October 1905 – 12 November 1918
PredecessorAlexander
SuccessorMonarchy abolished
Born30 May 1871 (1871-05-30)
Oberkassel
Died30 December 1949 (1949-12-31) (aged 78)
Detmold
SpousePrincess Bertha of Hesse-Philippsthal-Barchfeld
Princess Anna of Ysenburg and Büdingen
IssueArmin, Prince of Lippe
HouseHouse of Lippe
FatherErnest, Count of Lippe-Biesterfeld
MotherCountess Karoline of Wartensleben

Leopold IV, Prince of Lippe (Leopold Julius Bernhard Adalbert Otto Karl Gustav; 30 May 1871 – 30 December 1949) was the final sovereign of the Principality of Lippe in northwestern Germany from 1905 until his abdication in 1918. Prior to succeeding to the throne, he had been governing the state since 1904 as regent. He was the first and only ruler of Lippe of the Lippe-Biesterfeld branch.