The following categories contain pages or media. Unused categories are not shown here. Also see wanted categories.

• Advanced Probability Problems‏‎ (0 members)
• Algebra‏‎ (89 members)
• Algebra Problems‏‎ (5 members)
• Algebraic Manipulations Problems‏‎ (2 members)
• Algorithms‏‎ (3 members)
• Analysis‏‎ (18 members)
• Analytic number theory‏‎ (5 members)
• Angles‏‎ (5 members)
• AoPSWiki Games‏‎ (12 members)
• AoPS Wiki‏‎ (34 members)
• AoPS forums‏‎ (2 members)
• Aops-g5-gethsemanea2‏‎ (25 members)
• Aoum‏‎ (20 members)
• Area Problems‏‎ (28 members)
• Art of Problem Solving‏‎ (6 members)
• Article of the Day‏‎ (37 members)
• Articles for deletion‏‎ (53 members)
• Asymptote‏‎ (27 members)
• Axioms‏‎ (6 members)
• BBCode‏‎ (5 members)
• Beginner Olympiad mathematics competitions‏‎ (6 members)
• Books‏‎ (6 members)
• CSS‏‎ (12 members)
• Calculators‏‎ (2 members)
• Calculus‏‎ (32 members)
• Canadian MO Problems‏‎ (1 member)
• Category theory‏‎ (10 members)
• Checkers‏‎ (21 members)
• Chess Piphi‏‎ (78 members)
• Chess positions‏‎ (27 members)
• Circle Problems‏‎ (5 members)
• Combinatorics‏‎ (43 members)
• Combinatorics Problems‏‎ (5 members)
• Commutative algebra‏‎ (6 members)
• Complex Number Problems‏‎ (1 member)
• Complex analysis‏‎ (10 members)
• Complex numbers‏‎ (14 members)
• Computer programming‏‎ (66 members)
• Computer science‏‎ (2 members)
• Conjectures‏‎ (3 members)
• Connect 4‏‎ (21 members)
• Constants‏‎ (10 members)
• Coordinate Geometry Problems‏‎ (1 member)
• Creative Projects‏‎ (120 members)
• Current Finals Chess Games‏‎ (1 member)
• Current Round 1 Chess Games‏‎ (5 members)
• Current Round 2 Chess Games‏‎ (1 member)
• Current Round 3 Chess Games‏‎ (1 member)
• Current Round 4 Chess Games‏‎ (1 member)
• Current Semifinals Chess Games‏‎ (1 member)