Major Wilhelm Balthasar (2 February 1914 – 3 July 1941) was a German World War II Luftwaffe flying ace, commander of Jagdgeschwader 2 (JG 2) and a winner of the Knight's Cross of the Iron Cross with Oak Leaves (). 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. Legally it was Germany's highest military decoration at the time of its presentation to Wilhelm Balthasar.