- R.A.V. v. City of St. Paul
- R.I.S.E., Inc. v. Kay
- Railroad Commission of Texas v. Pullman Company
- Raines v. Byrd
- Rankin v. McPherson
- Red Lion Broadcasting Co. v. Federal Communications Commission
- Reed v. Reed
- Reeves, Inc. v. Stake
- Reid v. Covert
- Reno v. American Civil Liberties Union
- Reproductive Rights
- Reynolds v. Pegler
- Reynolds v. Sims
- Reynolds v. United States
- Rhode Island v. Innis
- Richards v. Wisconsin
- Right to Bear Arms
- Rights of Gays and Lesbians
- The Rights of the Accused before Trial
- The Rights of the Accused during Trial
- The Rights of the Accused following Trial
- Rights of the Disabled
- Roberts v. U.S. Jaycees
- Robinson v. California
- Rochin v. California
- Roe v. Wade
- Rogers v. Lodge
- Romer v. Evans
- Rosario v. Rockefeller
- Rosenberger v. University of Virginia
