Category:Organizations based in the United States by subject

• Organizations based in the United States by activity (11 C)

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• Organizations based in insular areas of the United States by subject (11 C)

A

• Animal welfare organizations based in the United States (6 C, 92 P)
• Anti-bullying organizations in the United States (10 P)
• Anti-nuclear organizations based in the United States (21 P)
• Archaeological organizations based in the United States (1 C, 33 P)

B

• Biology organizations based in the United States (2 C, 9 P)

C

• Charities based in the United States (16 C, 41 P)
• Child-related organizations in the United States (6 C, 34 P)
• Civic and political organizations of the United States (4 C, 70 P)
• Clubs and societies in the United States (30 C, 204 P)
• Consortia in the United States (2 C, 21 P)
• Consumer organizations in the United States (8 C, 39 P)
• Councils of governments (4 C, 27 P)
• Crime victim organizations based in the United States (1 C)
• Cultural organizations based in the United States (16 C, 9 P)

D

• Domestic violence-related organizations in the United States (25 P)

E

• Educational organizations based in the United States (33 C, 406 P)
• Environmental organizations based in the United States (23 C, 166 P)

F

• American food and drink organizations (6 C, 21 P)
• Freemasonry in the United States (14 C, 36 P)
• United States friendship associations (1 C, 29 P, 1 F)

G

• Geographic data and information organizations in the United States (2 C, 39 P)
• Government agencies in the United States (15 C, 17 P)
• Guilds in the United States (3 C, 22 P)

H

• History organizations based in the United States (10 C, 97 P)
• Hobbyist organizations based in the United States (1 C, 3 P)
• Housing organizations in the United States (2 C, 36 P)
• Human rights organizations based in the United States (9 C, 170 P)

I

• Indigenous organisations in the United States (1 C, 3 P)
• International organizations based in the United States (9 C, 120 P)

L

• Labor studies organizations based in the United States (9 P)
• Law enforcement non-governmental organizations in the United States (1 C, 32 P)
• Legal organizations based in the United States (4 C, 121 P, 1 F)

M

• Medical and health organizations based in the United States (39 C, 24 P, 2 F)
• Migration-related organizations based in the United States (3 C, 14 P)
• Musical theatre organizations in the United States (1 C, 5 P)

N

• Nonpartisan organizations in the United States (4 C, 123 P)
• Nonviolence organizations based in the United States (1 C, 22 P)

P

• Paramilitary organizations based in the United States (4 C, 16 P)
• Philanthropic organizations based in the United States (4 C, 80 P)
• Philosophical societies in the United States (2 C, 45 P)

R

• Refugee aid organizations in the United States (37 P)
• Research organizations in the United States (9 C, 76 P)

S

• Scientific organizations based in the United States (13 C, 84 P)
• Skeptic organizations in the United States (28 P)
• Social work organizations in the United States (1 C, 16 P)
• Sports organizations of the United States (28 C, 39 P)
• Standards organizations in the United States (11 C, 102 P, 1 F)
• Statistical organizations in the United States (4 C, 23 P)

T

• Translation associations of the United States (6 P)