Gerhard Oskar Merrem
German judge
- Born: 1911-07-07
- Occupation: judge; military officer (period: 1941-06-01 through 1945-01-01)
- Member of: 12th Army
- Participant in: Hostages Trial (date: 1947-08-18; role: affiant)
- Significant person: Hermann Foertsch (role: superior)
- Employer: Local Court Cologne (date: 1947-08-15)
- Residence: Bonn