Categories

The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.

• Alpine tundra‏‎ (1 member)
• Alps‏‎ (1 member)
• Alsace‏‎ (1 member)
• Alternate reality games‏‎ (1 member)
• Alternative Education‏‎ (1 member)
• Alternative Energy Sources‏‎ (1 member)
• Alternative Investments‏‎ (1 member)
• Alternative Medicine‏‎ (8 members)
• Alternative Propulsion‏‎ (1 member)
• Alternative culture‏‎ (1 member)
• Alternative energy‏‎ (3 members)
• Alternative fuels‏‎ (3 members)
• Alternative medicine‏‎ (2 members)
• Alternative rock albums‏‎ (1 member)
• Alternative rock groups‏‎ (1 member)
• Alteromonadales‏‎ (1 member)
• Altitude Medicine‏‎ (1 member)
• Altruism‏‎ (1 member)
• Aluminium‏‎ (4 members)
• Aluminium minerals‏‎ (1 member)
• Aluminum production‏‎ (1 member)
• Alumni by university or college in the United States‏‎ (1 member)
• Alumni of the Royal Irish Academy of Music‏‎ (1 member)
• Alumni of the University of Cambridge‏‎ (2 members)
• Alveolata‏‎ (1 member)
• Amarna Period‏‎ (1 member)
• Amateur Sports Organizations‏‎ (1 member)
• Amateur radio‏‎ (2 members)
• Amateur sports organizations‏‎ (1 member)
• Amazon (company)‏‎ (9 members)
• Amazon (company) acquisitions‏‎ (1 member)
• Amazon (company) hardware‏‎ (1 member)
• Amazon Basin‏‎ (3 members)
• Amazon Rainforest‏‎ (4 members)
• Amazon rainforest‏‎ (2 members)
• Amazon river‏‎ (1 member)
• Amazons‏‎ (1 member)
• Ambassadors of the United States‏‎ (2 members)
• Amendments to the United States Constitution‏‎ (1 member)
• America‏‎ (1 member)
• American Academic Societies‏‎ (1 member)
• American Academics‏‎ (5 members)
• American Activists‏‎ (1 member)
• American Actors‏‎ (4 members)
• American Actresses‏‎ (3 members)
• American Animated Television Series‏‎ (1 member)
• American Anthropologists‏‎ (2 members)
• American Architects‏‎ (3 members)
• American Art Critics‏‎ (1 member)
• American Artists‏‎ (10 members)