The House of Wallmoden is a German noble family from the Diocese of Hildesheim in Lower Saxony.
Through marriage and inheritances, the family was able to significantly extend its property and continued into the 18th century.
In 1782 this line acquired from the princedom of Schwarzenberg the Reichsherrschaft Gimborn in Westphalia and on 17 January 1783 was raised by Joseph II, Holy Roman Emperor to the name of Wallmoden-Gimborn and promoted to Reichsgraf.
The younger line or lower house has been able to retain the property of the Stammsitz, temporarily a 'Fideikommiss', right up to the present day.
In the 16th century Georg Thym wrote a variant of the 'Henry the Lion' saga under the title Thedel von Wallmoden (published by Paul Zimmermann in 1887).