Oskar Zimmermann (6 December 1917 – 12 June 1976) was a German Luftwaffe 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. He received this award after 28 aerial victories—that is, 28 aerial combat encounters resulting in the destruction of the enemy aircraft. During his career Oskar Zimmermann was credited with 34 victories in over 580 combat missions, 28 of which claimed on the Western Front including 14 heavy bombers.