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 (German: Ritterkreuz des Eisernen Kreuzes mit Eichenlaub). 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.