| Honorific-Prefix: | Dr. jur. |
| Stefan Dittrich | |
| Office: | Member of the Bundestag from Deggendorf |
| Term Start: | 1953 |
| Term End: | 1972 |
| Office2: | Member of the European Parliament |
| Term Start2: | 9 December 1965 |
| Term End2: | 14 February 1973 |
| Birth Date: | 28 June 1912 |
| Birth Place: | Hof, Bavaria, German Empire |
| Nationality: | German  |
| Death Place: | Bad Kötzting, Germany |
| Party: | CSU |
| Alma Mater: | Ludwig Maximilian University of Munich |
| Occupation: | Soldier, politician |
| Branch: | Army |
| Serviceyears: | –1945 |
| Rank: | Major |
| Unit: | Artillerie-Regiment 46 |
| Battles: | World War II |
| Awards: | Knight's Cross of the Iron Cross |
Stefan Dittrich (28 June 1912 – 5 February 1988) was a German politician, who represented Deggendorf for the Christian Social Union of Bavaria.[1] in the Bundestag.