Hans-Dieter Frank (8 July 1919 – 28 September 1943) was a German Luftwaffe night fighter ace and recipient of the Knight's Cross of the Iron Cross with Oak Leaves during World War II. Frank claimed 55 aerial victories. The Knight's Cross of the Iron Cross and its higher grade Oak Leaves was awarded to recognise extreme battlefield bravery or successful military leadership. Frank was killed in a mid-air collision with another night fighter northwest of Celle in the night of 28/29 September 1943. This collision was likely caused by an attack made on his fighter by RAF night fighter ace Bob Braham.