</ref>
| name                      = Ludwig Wittgenstein
| image                     =36. Portrait of Ludwig Wittgenstein, 1930.jpg 
| image_size                = 180px
| alt                       = photograph
| caption                   = Ludwig Wittgenstein (1930)
| birth_date                = {{Birth date|df=y|1889|04|26}}
| birth_place               = [[Vienna]], [[Austrick-Hungary]]
| death_date                = {{Death date and age|df=y|1951|04|29|1889|04|26}}
| death_place               = [[Cambridge]], Ingland
| death_cause               = [[Prostate cancer]]
| resting_place             = [[Ascension Parish Burial Grund, Cambridge|Ascension Parish Burial Grund]], Cambridge
| resting_place_coordinates = {{Coord|52.2176|N|0.1001|E|type:landmark_region:GB|display=title}}
main_interests = [[Logic]], [[Metapheesics]], [[Filosofie o leid]], [[Filosofie o mathematics]], [[Filosofie o mind]], [[Epistemology]]
| influences = [[Gottlob Frege]], [[Johann Wolfgang von Goethe]], [[Søren Kierkegaard]], [[G. E. Moore]], [[Oswald Spengler]], [[Ludwig Boltzmann]], [[Karl Kraus]], [[Adolf Loos]], [[Piero Sraffa]], [[Otto Weininger]], [[Bertrand Russell]], [[Arthur Schopenhauer]], [[Baruch Spinoza]], [[Leo Tolstoy]], [[Heinrich Hertz]]<ref>{{Cite web |url=http://faculty.education.illinois.edu/burbules/syllabi/Materials/Wittgenstein_as_Engineer.html |title="Wittgenstein As Engineer" |access-date=2015-03-28 |archive-date=2018-02-10 |archive-url=https://web.archive.org/web/20180210153804/http://faculty.education.illinois.edu/burbules/syllabi/Materials/Wittgenstein_as_Engineer.html |url-status=dead }}</ref> [[Hermann von Helmholtz]]<ref>Patton, Lydia, 2009, "Signs, Toy Models, and the A Priori: from Helmholtz to Wittgenstein," ''Studies in the History and Philosophy of Science'', '''40''' (3): 281–289.</ref>
| influenced = [[Bertrand Russell]], [[G.E. Moore]], [[Frank P. Ramsey]], [[Vienna Circle]], [[Rudolf Carnap]], [[Alan Turing]], [[G.E.M. Anscombe]], [[Peter Geach]], [[Anthony Kenny]], [[Barry Stroud]], [[Gilbert Ryle]], [[Saul Kripke]],  [[John Searle]], [[John McDowell]], [[Hans Sluga]], [[Peter Hacker]], [[Stephen Toulmin]], [[Hannah Ginsborg]]
| website                   = [http://wab.aksis.uib.no/index.page The Wittgenstein Archives at the University of Bergen]<br>[http://www.wittgen-cam.ac.uk/cgi-bin/forms/home.cgi The Cambridge Wittgenstein Archive]
| signature                 = 
}}
'''Ludwig Josef Johann Wittgenstein''' ({{IPAc-en|ˈ|v|ɪ|t|g|ən|ˌ|s|t|aɪ|n}};<ref>[http://dictionary.reference.com/browse/wittgenstein "Wittgenstein"]. ''[[Random House Webster's Unabridged Dictionary]]''.</ref> {{IPA-de|ˈvɪtgənˌʃtaɪn|lang}}; 26 Aprile 1889 – 29 Aprile 1951) wis an Austrick-Breetish filosofer who wirked primarily in [[logic]], the [[filosofie o mathematics]], the [[filosofie o mind]], an the [[filosofie o leid]].<ref name="Time">{{cite news|title=LUDWIG WITTGENSTEIN: Philosopher (subscription required)&nbsp;— Time 100: Scientists and Thinkers issue|work=Time Magazine Online|url=http://www.time.com/time/magazine/article/0,9171,990616,00.html|date=29 March 1999|last=Dennett|first=Daniel|accessdate=29 November 2011|archive-date=2013-08-26|archive-url=https://web.archive.org/web/20130826120239/http://www.time.com/time/magazine/article/0,9171,990616,00.html|url-status=dead}}</ref>