Organizations

OAS

Which countries are in OAS? 34 member countries in the Magna Factbook, ranked by Magna Power.

Last updated: October 2026

Member countries (34)

#	Country	Power
1	United States	90.0/100
2	Brazil	68.58/100
3	Canada	67.8/100
4	Mexico	67.02/100
5	Ecuador	61.3/100
6	Argentina	60.77/100
7	Colombia	60.09/100
8	Peru	59.43/100
9	Venezuela	58.77/100
10	Chile	57.94/100
11	Guatemala	57.19/100
12	Panama	57.15/100
13	Honduras	55.64/100
14	Costa Rica	55.43/100
15	Dominican Republic	55.4/100
16	Paraguay	52.62/100
17	El Salvador	51.45/100
18	Guyana	51.21/100
19	Jamaica	51.19/100
20	Bolivia	50.91/100
21	Uruguay	50.45/100
22	Cuba	49.96/100
23	The Bahamas	48.16/100
24	Suriname	47.82/100
25	Belize	38.39/100
26	Haiti	38.18/100
27	Trinidad and Tobago	38.02/100
28	Antigua and Barbuda	20.69/100
29	Grenada	20.28/100
30	Dominica	19.01/100
31	Barbados	17.8/100
32	Saint Kitts and Nevis	15.1/100
33	Saint Vincent and the Grenadines	14.75/100
34	Saint Lucia	13.99/100

Other organizations

CICA CP ECO EITI FAO G-77 IAEA IBRD ICAO ICC ICCt ICRM

Across the Bureau

ABEDA — Member Countries ACP — Member Countries ACS — Member Countries Afghanistan — Country Profile Albania — Country Profile Algeria — Country Profile

OAS has 34 member countries, ranked by national power. The strongest members are United States, Brazil, and Canada. The Bureau lists every member with its power score, from the most powerful to the least. Membership reflects the Factbook's country coverage as of October 2026.

Frequently asked questions

What is OAS?

OAS is an international organization with 34 member countries listed in Magna Bureau Factbook, ranked by national power.

Which countries are members of OAS?

The 34 member countries of OAS include United States, Brazil, Canada, Mexico, Ecuador and 29 others. See the full ranked list on this page.