| Ernst Dehner | |
| Birth Date: | 5 March 1889 |
| Birth Place: | Hersbruck, German Empire |
| Death Place: | Königstein im Taunus, West Germany |
| Branch: | Army |
| Rank: | General |
| Commands: | 106. Infanterie-Division LXXXII. Armeekorps |
| Awards: | Knight's Cross of the Iron Cross |
Ernst Dehner (5 March 1889 – 13 September 1970) was a general in the Wehrmacht of Nazi Germany during World War II. He was a recipient of the Knight's Cross of the Iron Cross. In 1948 he was found guilty of war crimes at the Hostages Trial and was sentenced to 7 years imprisonment, but was released in 1951.
. Walther-Peer Fellgiebel . 2000 . 1986 . Die Träger des Ritterkreuzes des Eisernen Kreuzes 1939–1945 — Die Inhaber der höchsten Auszeichnung des Zweiten Weltkrieges aller Wehrmachtteile . The Bearers of the Knight's Cross of the Iron Cross 1939–1945 — The Owners of the Highest Award of the Second World War of all Wehrmacht Branches . German . Friedberg, Germany . Podzun-Pallas . 978-3-7909-0284-6.