Ludwig Wittgenstein (Ludwig Josef Johann Wittgenstein, 1889 – 1951) was an Austrian-British philosopher.
Wittgenstein may also refer to: Wittgenstein (film), Derek Jarman's 1993 biopic of Ludwig Wittgenstein Wittgenstein family relatives of Ludwig in Vienna, Austria, now demolished residence of the family Haus Wittgenstein, residence of Margaret Stonborough-Wittgenstein in Vienna, Austria, partly designed by her brother Ludwig Wittgenstein or , a former Westphalian principality merged with Kreis Wittgenstein before being incorporated into Kreis Siegen-Wittgenstein, Germany Wittgenstein Castle, near Bad Laasphe, Germany, seat of the principality of Wittgenstein Sayn-Wittgenstein, a German noble family, formerly counts of Wittgenstein Wittgenstein, a fictional computer in The Brave Little Toaster to the Rescue and The Brave Little Toaster Goes to Mars Wittgenstein (비트겐슈타인), a South Korean rock band formed by Shin Hae-Chul, active from 2000 to 2001
People with the surname Viennese Wittgensteins Karl Wittgenstein (1847–1913), Austrian steel tycoon and father of Ludwig Margaret Stonborough-Wittgenstein (Margarethe Anna Maria, 1882–1958 ), sister of Ludwig Paul Wittgenstein (1887–1961), pianist and brother of Ludwig Paul Wittgenstein (grandson of his namesake, 1907–1979), eccentric and subject of Thomas Bernard's book Wittgenstein's Nephew (1982) Sayn-Wittgensteins (died 1272), abbott of Grafschaft Abbey Louis I, Count of Sayn-Wittgenstein (1532–1605), German nobleman Prince Peter Wittgenstein (1769–1843), Russian field marshal Wilhelm Ludwig Sayn-Wittgenstein, Prussian politician Ludwig zu Sayn-Wittgenstein-Berleburg (1799–1866), Russian aristocrat Princess Carolyne zu Sayn-Wittgenstein (1819–1887), Russian noblewoman, Franz Liszt's mistress and patron Heinrich Prinz zu Sayn-Wittgenstein (1916–1944), World War II German flying ace Botho Prinz zu Sayn-Wittgenstein-Hohenstein (1927–2008), German politician Richard, 6th Prince of Sayn-Wittgenstein-Berleburg (1934–2017), German businessman Princess Nathalie of Sayn-Wittgenstein-Berleburg (born 1975), Danish equestrian August Wittgenstein (August-Frederik Prinz zu Sayn-Wittgenstein-Berleburg, born 1981), German-Swedish actor