| Prince Ludwig Ferdinand of Sayn-Wittgenstein-Berleburg | |
| Birth Date: | 4 April 1910 |
| Birth Place: | Berleburg Castle, Germany |
| Death Place: | Zhytomyr, Ukrainian SSR, Soviet Union |
| Allegiance: | (to 1933) |
| Branch: | Army |
| Serviceyears: | 1930–43 |
| Rank: | Oberst (Posthumously) |
| Commands: | Kavallerie-Regiment Süd |
| Battles: | World War II |
| Awards: | Knight's Cross of the Iron Cross |
Prinz Ludwig Ferdinand Paul Franz Stanislaus Ulrich Otto Ludolf zu Sayn-Wittgenstein-Berleburg (4 April 1910 – 22 November 1943) was a highly decorated Oberst in the Wehrmacht during World War II. He was also a 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. Ludwig-Ferdinand Prinz von Sayn-Wittgenstein-Berleburg was killed on 22 November 1943 near Zhytomyr, Ukraine. He was posthumously awarded the Knight's Cross on 20 January 1944 and was also promoted to Oberst.
Ludwig was the son of Richard, 4th Prince of Sayn-Wittgenstein-Berleburg and Princess Madeleine of Löwenstein-Wertheim-Freudenberg. He had two older brothers, Gustav Albrecht who was also killed in 1944, and Christian Heinrich who died in 1983. Gustav's son Richard was married to Princess Benedikte of Denmark, sister of Queen Margrethe II and of former Queen Anne-Marie of Greece.
Ludwig Ferdinand married in 1935 Princess Friederike Juliane of Salm-Horstmar, daughter of Otto II, Prince of Salm-Horstmar (1867-1941) and Countess Rosa of Solms-Baruth (1884-1945). They had five children:
His descendants include Ludwig-Ferdinand's children Princess Anna of Bavaria and Prince August Fredrik zu Sayn-Wittgenstein-Berleburg.
. Walther-Peer Fellgiebel . 2000 . 1986 . Die Träger des Ritterkreuzes des Eisernen Kreuzes 1939–1945 — Die Inhaber der höchsten Auszeichnung des Zweiten Weltkrieges aller Wehrmachtteile . The Bearers of the Knight's Cross of the Iron Cross 1939–1945 — The Owners of the Highest Award of the Second World War of all Wehrmacht Branches . German . Friedberg, Germany . Podzun-Pallas . 978-3-7909-0284-6.