Theodor Vahlen
| Karl Theodor Vahlen | |
|---|---|
| Gauleiter of Gau Pomerania | |
| In office 22 March 1925 – 21 August 1927 | |
| Preceded by | Position established | 
| Succeeded by | Walther von Corswant | 
| Ministerial Director Reich Ministry of Science, Education and Culture | |
| In office 1 June 1934 – 1 January 1937 | |
| President Prussian Academy of Science | |
| In office 1 January 1939 – 1 April 1943 | |
| Personal details | |
| Born | 30 June 1869 Vienna, Austria-Hungary | 
| Died | 16 November 1945 (aged 76) Štěchovice, Czechoslovakia | 
| Alma mater | University of Berlin | 
| Profession | Professor | 
| Known for | Journal editor Deutsche Mathematik | 
| Signature | |
| Military service | |
| Allegiance | German Empire | 
| Branch/service | Imperial German Army | 
| Years of service | 1914–1918 | 
| Rank | Major | 
| Unit | 68th (6th Royal Saxon) Field Artillery Regiment | 
| Battles/wars | World War I | 
| Awards | Iron Cross, 1st class and 2nd class | 
Karl Theodor Vahlen (30 June 1869 – 16 November 1945) was a German mathematician and leading representative of National Socialist German mathematics ("Deutsche Mathematik"). A member of the Nazi Party, he served as the first Gauleiter of Pomerania and was a member of both the SA and SS.