Hans-Joachim Birkner (22 October 1921 – 14 December 1944) was a Luftwaffe fighter ace and recipient of the Knight's Cross of the Iron Cross (German: Ritterkreuz des Eisernen Kreuzes) during World War II.
The Knight's Cross of the Iron Cross was awarded to recognise extreme battlefield bravery or successful military leadership.
Birkner was credited with 117 aerial victories—that is, 117 aerial combat encounters resulting in the destruction of the enemy aircraft.