Rudolf Mühlbauer (23 March 1919 – 26 March 2000) was a Maat in World War II and recipient of the Knight's Cross of the Iron Cross. The Knight's Cross of the Iron Cross was awarded to recognise extreme battlefield bravery or successful military leadership. Mühlbauer was born in Königsbruck. He served as a lookout on U-123 on numerous war patrols under the command of Kapitänleutnant Karl-Heinz Moehle, Kapitänleutnant Reinhard Hardegen and Oberleutnant zur See Horst von Schroeter. Mühlbauer died, aged 81, in Laussnitz.