Heinrich "Heinz" Hackler (14 December 1918 – 1 January 1945) was a German Luftwaffe fighter ace and recipient of the Knight's Cross of the Iron Cross during World War II. The Knight's Cross of the Iron Cross was awarded to recognise extreme battlefield bravery or successful military leadership. Heinz Hackler was listed as missing in action near Antwerp, Belgium after being hit by Allied flak during Operation Bodenplatte. Heinz Hackler was credited with 56 aerial victories.