Ludwig Wittgenstein, Philosopher; and

Haus Wittgenstein, a building in Vienna

Heinrich Prinz zu Sayn-Wittgenstein, World War II German flying ace

Paul Wittgenstein, Pianist

Wittgenstein Castle, near Bad Laasphe

Karl Wittgenstein, Austrian entrepreneur, father of:

Prince Peter Wittgenstein, Russian Field Marshal

Ludwig zu Sayn-Wittgenstein-Berleburg, Russian aristocrat

Members of the German noble family Sayn-Wittgenstein

Kreis Wittgenstein, a former district in North Rhine-Westphalia, now incorporated into Kreis Siegen-Wittgenstein

Princess (Fürstin) Carolyne von Sayn-Wittgenstein (Carolyne zu Sayn-Wittgenstein, or Marie zu Sayn-Wittgenstein) (1819–1887), Russian nobility, Franz Liszt's mistress and patron, and a close friend of Berlioz (She is not Marie Catherine Sophie de Flavigny, Comtesse (Gräfin) Marie d'Agoult, known by her pen name, "Daniel Stern") ([1])