|Born||4 April 1910
|Died||20 January 1949
|Years of service||1939–1945|
|Unit||1st SS Division Leibstandarte SS Adolf Hitler
12th SS Panzer Division Hitler Youth
|Battles/wars||World War II|
|Awards||Knight's Cross of the Iron Cross
Iron Cross 1st Class
Iron Cross 2nd Class
Eastern Front Medal
War Merit Cross 2nd Class with Swords
War Merit Cross 1st Class with Swords
Bernhard Siebken (4 April 1910 — 20 January 1949) was a SS-Obersturmbannführer (lieutenant colonel) in the Waffen-SS who was awarded the Knight's Cross of the Iron Cross for his actions on the 17 April 1945, while in command of the 2nd SS Panzer Grenadier Regiment of the Leibstandarte SS Adolf Hitler (LSSAH). Siebken was one of the original members of the Leibstandarte SS Adolf Hitler.
He took part in the Polish campaign of 1939 and went on to serve on the eastern front. In 1944, Seibken commanded the 2nd Battalion, 26th SS Panzer Grenadier Regiment and later the 25th SS Panzer Grenadier Regiment; both with the 12th SS Panzer Division Hitlerjugend (Hitler Youth). On 21 June 1944, he was promoted to the rank of SS-Obersturmbannführer.
Following the end of the war, he was accused of war crimes; while in command of the 2nd Battalion, 26th Panzer Grenadier Regiment, he was responsible for shooting Canadian prisoners of war. He was found guilty and hanged on the 20 January 1949.
- Margolian, Howard. Conduct Unbecoming, p. 76
- Meyer, Hubert. The 12th SS Volume Two, p. 520