Ernst Düllberg (28 March 1913 – 27 July 1984) was a former German Luftwaffe fighter ace and recipient of the Knight's Cross of the Iron Cross during World War II. Ernst Düllberg was credited with 45 victories in 650 combat missions, 36 over Western Front and 9 victories over the Eastern Front.
- Iron Cross (1939) 2nd and 1st Class
- German Cross in Gold on 16 January 1944 as Major in the III./JG 27
- Knight's Cross of the Iron Cross on 27 July 1944 as Major and Gruppenkommandeur of the III./JG 27