- Red Scare
- Redemption
- Redlining
- Redress
- Reductio Ad Absurdum
- Reed, Stanley Forman
- Referee
- Reference
- Referendum
- Reform Party
- Reformation
- Reformatories
- Refreshing Memory
- Refugees
- Refunding
- Regents of the University of California v. Bakke
- Register
- Register of Deeds
- Registrar
- Registration
- Registration of Land Titles
- Regressive Tax
- Regular
- Regulation
- Rehabilitation
- Rehnquist, William Hubbs
- Reinstate
- Reinsurance
- Rejoinder
- Relation
