Horst Reger
prosecutor at Bielefeld
- Born: 1907-12-07 (Kaliningrad)
- Died: 1992-07-28 (Bad Godesberg)
- Occupation: judge; prosecutor
- Participant in: Hostages Trial (date: 1947-12-12; role: affiant)
- Significant person: Walter Kuntze (role: superior)
- Military branch: Wehrmacht (military unit: 5th Army; position held: judge)