• Criminal groups by type (12 C, 2 P)
• Defunct organizations by type (5 C)
• Members of organizations by type (9 C)
• Catholic orders and societies by type (19 C, 5 P)
• Companies by type (26 C, 7 P)
• Fraternities and sororities by type (9 C, 1 P)
• Educational institutions by type (2 C)
• International organizations by type of organization (4 C)
• Libraries by type (20 C, 18 P)
• Military forces by type (19 C)
• Non-profit organizations by type (16 C)
• Trade unions by type (8 C)

A

• Associated organizations (20 C)

B

• Business (37 C, 24 P)

C

• Clandestine groups (8 C, 45 P)
• Collectives (14 C, 24 P)
• Committees (19 C, 41 P)
• Cooperatives (25 C, 53 P)

F

• Factions (4 C, 7 P)
• Fraternities (9 C, 12 P)
• Front organizations (3 C, 53 P)

G

• Grassroots organizations (11 P)

I

• Illegal organizations (6 C, 9 P)
• Institutes (4 C, 28 P)
• International organizations (21 C, 16 P)

M

• Mass organisations (3 C)
• Micronational organizations (1 C, 3 P)
• Military organization (24 C, 29 P)

P

• Professional associations (17 C, 17 P)

S

• Slavery-related organizations (1 C, 8 P)
• Support groups (9 C, 46 P)

T

• Organisations designated as cults (2 P)

Ω

• Wikipedia categories named after organizations by type (29 C)