The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Rallies (1 member)
- Reactionaries (31 members)
- Reactionary slogans (1 member)
- Reading lists (9 members)
- Rebellions in the United States (1 member)
- Recipients of the Imperial Order of the Iron Crown (3rd Class) (1 member)
- Recipients of the Iron Cross (1939), 1st class (1 member)
- Recipients of the Iron Cross (1939), 2nd class (1 member)
- Recipients of the Knight's Cross of the Iron Cross (2 members)
- Recipients of the Knight's Cross of the Iron Cross with Oak Leaves (1 member)
- Recipients of the Knight's Cross of the Iron Cross with Oak Leaves, Swords, and Diamonds (1 member)
- Recipients of the Knight's Cross of the Iron Cross with Oak Leaves and Swords (1 member)
- Recipients of the Pour le Mérite (military class) (1 member)
- Recipients of the Silver Medal for Bravery (Austria), 1st class (1 member)
- Red Army officers (1 member)
- Red Army soldiers (6 members)
- Red Clarion article (1 member)
- Redirect pages (1 member)
- Redirects connected to a Wikibase item (4 members)
- Regions of the Russian Federation (1 member)