The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Portal (6 members)
- Portugal (15 members)
- Primer on historical records (119 members)
- Puerto Rico (2 members)
- R=Genealogy tips (0 members)
- Resarch strategies (0 members)
- Research strageies (0 members)
- Research strategies (118 members)
- Romania (16 members)
- Russia (49 members)
- Russian Empire (6 members)
- Russian genealogy (6 members)
- Samoa (2 members)
- San Marino (2 members)
- Scotland (11 members)
- Serbia (2 members)
- ShadowShadowGenealogy research by location (1 member)
- Shadow Genealogy research by location (6 members)
- Sidebar (1 member)
- Slovakia (6 members)
- Slovenia (5 members)
- Somalia (3 members)
- South Africa (20 members)
- South Korea (1 member)
- Spain (29 members)
- Sri Lanka (1 member)
- Suriname (2 members)
- Surnames (249 members)
- Sweden (14 members)
- Switzerland (9 members)
- Syria (4 members)
- Tajikistan (1 member)
- Texas (2 members)
- Thailand (2 members)
- The Balkans (1 member)
- The Caribbean (1 member)
- The Netherlands (18 members)
- Tonga (2 members)
- Trinidad and Tobago (1 member)
- Tunisia (1 member)
- Turkey (6 members)
- Turkmenistan (1 member)
- UK (1 member)
- Ukraine (58 members)
- Ukrainian ancestry (2 members)
- Ukrainian genealogy (8 members)
- United Kingdom (190 members)
- United Kungdom (0 members)
- United States (935 members)
- Uruguay (5 members)