Her Serene Highness Princess Sophie von Hohenberg (24 July 1901 – 27 October 1990) was the eldest of four children born of the morganatic marriage of Archduke Franz Ferdinand of Austria and Sophie Chotek. Her mother was created Fürstin von Hohenberg at the time of the marriage, and the children were born with that title (boys were Fürst), though when their mother became Duchess von Hohenberg, they became Prince von Hohenberg or Princess von Hohenberg.

Following the assassination of her parents, Sophie and her two surviving brothers, Maximilian and Ernst, were taken in by their father's close friend and shooting partner Graf Jaroslav Thurn.

Until late 1918, they were exiled from Czechoslovakia, losing all their possessions there and took refuge in Vienna and Schloß Artstetten. But in 1938, following the Anschluß they were arrested and deported to Dachau concentration-camp where they spent the next seven years of their lives.

Sophie married Count Friedrich von Nostitz-Rieneck , Duke of Tetschen and Elbe, on 8 September 1920 and had four children:

1. Count Erwein von Nostitz-Rieneck (1921–1949)
2. Count Franz von Nostitz-Rieneck (1923–1945)
3. Count Aloys von Nostitz-Rieneck (1925–2003)
4. Countess Sophie von Nostitz-Rieneck (1929–1953)