Henry IX of Waldeck-Wildungen (10 December 1531 – 3 October 1577 in Werbe) was the fourth son of the Count Philip IV (1493–1574) and his first wife, Margaret of East Frisia (1500–1537).
After his return, he married on 19 December 1563 in Korbach to Anna of Viermund-Nordenbeck (1538–1599), who brought the Lordship of Nordenbeck into the marriage.
The marriage remained childless Anna's step-cousins did not recognize her as the heir to Nordenbeck.
When he was ready to march his troops into Nordenbeck, his horse bolted and stampeded and he died in front of his wife, hanging from the stirrups.
[1] Henry was succeeded as Count of Waldeck-Wildungen by his nephew Günther (29 June 1557 – 23 May 1585), the son of his brother Samuel, who had died in 1570.