| Paul Diethei | |
| Birth Date: | 1925 6, df=yes |
| Birth Place: | Reimlingen, Bavaria, Germany |
| Death Place: | Kempten, Bavaria, Germany |
| Occupation: | Politician |
| Party: | Christian Social Union of Bavaria |
| Nationality: | German |
Paul Diethei (26 June 1925 – 25 September 1997) was a German politician from the Christian Social Union of Bavaria. He was a member of the Landtag of Bavaria from 1966 to 1994.[1]