This map is designed to visually demonstrate the geographic distribution of our Members. The boundaries shown do not imply an official endorsement or acceptance by ISO.
| Country/Territory | Acronym | Membership | TC Participation | PDC Participation |
|---|---|---|---|---|
| Qatar | QS | Member body | 39 | 3 |
| Portugal | IPQ | Member body | 481 | 3 |
| Romania | ASRO | Member body | 703 | 3 |
| United Kingdom | BSI | Member body | 760 | 3 |
| Senegal | ASN | Member body | 31 | 3 |
| Singapore | SSC | Member body | 176 | 3 |
| Sudan | SSMO | Member body | 33 | 3 |
| Haiti | BHN | Member body | 12 | 3 |
| Seychelles | SBS | Correspondent member | 20 | 3 |
| Gabon | AGANOR | Member body | 23 | 3 |
| Bhutan | BSB | Correspondent member | 21 | 2 |
| Sri Lanka | SLSI | Member body | 222 | 3 |
| Monaco | AMNOR | Member body | 0 | 0 |
| Sweden | SIS | Member body | 579 | 3 |
| Switzerland | SNV | Member body | 583 | 3 |
| Slovakia | UNMS SR | Member body | 489 | 2 |
| Syrian Arab Republic | SASMO | Member body | 26 | 0 |
| Tanzania, United Republic of | TBS | Member body | 178 | 3 |
| Czech Republic | UNMZ | Member body | 709 | 3 |
| Thailand | TISI | Member body | 303 | 3 |
| Togo | ATN | Correspondent member | 8 | 2 |
| Trinidad and Tobago | TTBS | Member body | 83 | 3 |
| North Macedonia | ISRSM | Member body | 27 | 2 |
| Tunisia | INNORPI | Member body | 169 | 3 |
| Turkmenistan | MSST | Correspondent member | 5 | 2 |
| Türkiye | TSE | Member body | 398 | 3 |
| Ukraine | SE UkrNDNC | Member body | 373 | 3 |
| Saint Kitts and Nevis | SKNBS | Member body | 6 | 2 |
| Russian Federation | GOST R | Member body | 708 | 3 |
| Uruguay | UNIT | Member body | 78 | 3 |
| United States | ANSI | Member body | 568 | 3 |
| Viet Nam | STAMEQ | Member body | 95 | 3 |
| Yemen | YSMO | Correspondent member | 0 | 0 |
| Serbia | ISS | Member body | 472 | 3 |
| Zambia | ZABS | Correspondent member | 23 | 3 |
| Somalia | SoBS | Correspondent member | 5 | 1 |
| South Sudan | SSNBS | Correspondent member | 0 | 0 |
| Macao Special Administrative Region of China | CPTTM | Correspondent member | 12 | 2 |
| Slovenia | SIST | Member body | 124 | 3 |
| Montenegro | ISME | Member body | 68 | 2 |
| Tajikistan | TAJIKSTANDARD | Correspondent member | 10 | 1 |
| Palestine, State of | PSI | Correspondent member | 16 | 3 |
| Lao People's Democratic Republic | DOSM | Correspondent member | 5 | 1 |
| Sao Tome and Principe | SENAPIQ STP | Subscriber member | 0 | 0 |
| Niger | ANMC | Correspondent member | 5 | 2 |
| Gambia | TGSB | Correspondent member | 4 | 3 |
| Mauritania | DNPQ | Correspondent member | 11 | 2 |
| Sierra Leone | SLSB | Correspondent member | 7 | 2 |
| Angola | INIQ | Correspondent member | 6 | 2 |
| Afghanistan | ANSA | Member body | 5 | 1 |
| Saint Vincent and the Grenadines | SVGBS | Correspondent member | 0 | 0 |
| Rwanda | RSB | Member body | 86 | 3 |
| Eritrea | ESI | Correspondent member | 4 | 1 |
| South Africa | SABS | Member body | 435 | 3 |
| Armenia | ARMSTANDARD | Member body | 62 | 3 |
| Albania | DPS | Correspondent member | 3 | 3 |
| Algeria | IANOR | Member body | 71 | 3 |
| Germany | DIN | Member body | 760 | 3 |
| Saudi Arabia | SASO | Member body | 350 | 3 |
| Argentina | IRAM | Member body | 400 | 3 |
| Australia | SA | Member body | 391 | 3 |
| Austria | ASI | Member body | 576 | 3 |
| Bahrain | BTMD | Member body | 47 | 3 |
| Bangladesh | BSTI | Member body | 53 | 2 |
| Antigua and Barbuda | ABBS | Subscriber member | 0 | 0 |
| Barbados | BNSI | Member body | 27 | 3 |
| Belarus | BELST | Member body | 180 | 3 |
| Belgium | NBN | Member body | 563 | 2 |
| Bolivia, Plurinational State of | IBNORCA | Member body | 36 | 3 |
| Namibia | NSI | Member body | 32 | 3 |
| Dominican Republic | INDOCAL | Member body | 25 | 3 |
| Brazil | ABNT | Member body | 342 | 3 |
| Brunei Darussalam | NSC | Correspondent member | 6 | 3 |
| Burundi | BBN | Member body | 28 | 3 |
| El Salvador | OSN | Member body | 21 | 3 |
| Bulgaria | BDS | Member body | 352 | 3 |
| Bosnia and Herzegovina | ISBIH | Member body | 99 | 3 |
| Honduras | OHN | Correspondent member | 9 | 2 |
| Guatemala | COGUANOR | Member body | 10 | 3 |
| Canada | SCC | Member body | 325 | 3 |
| Cameroon | ANOR | Member body | 44 | 3 |
| Zimbabwe | SAZ | Member body | 68 | 3 |
| Chile | INN | Member body | 160 | 3 |
| Belize | BZBS | Subscriber member | 0 | 1 |
| China | SAC | Member body | 767 | 3 |
| Cyprus | CYS | Member body | 130 | 2 |
| Benin | ANM | Member body | 12 | 2 |
| Colombia | ICONTEC | Member body | 193 | 3 |
| Korea, Democratic People's Republic of | CSK | Member body | 92 | 2 |
| Iraq | COSQC | Member body | 52 | 3 |
| Korea, Republic of | KATS | Member body | 734 | 3 |
| Costa Rica | INTECO | Member body | 64 | 3 |
| Uganda | UNBS | Member body | 108 | 3 |
| Uzbekistan | O'ZTTSA | Member body | 36 | 3 |
| Côte d'Ivoire | CODINORM | Member body | 72 | 3 |
| Croatia | HZN | Member body | 204 | 3 |
| Lesotho | LSI | Correspondent member | 2 | 3 |
| Cuba | NC | Member body | 187 | 3 |
| Congo, The Democratic Republic of the | OCC | Member body | 72 | 3 |
| Azerbaijan | AZSTAND | Member body | 44 | 3 |
| Denmark | DS | Member body | 392 | 3 |
| Egypt | EOS | Member body | 371 | 3 |
| United Arab Emirates | MoIAT-STR | Member body | 89 | 3 |
| Burkina Faso | ABNORM | Member body | 7 | 1 |
| Ecuador | INEN | Member body | 64 | 3 |
| Spain | UNE | Member body | 684 | 3 |
| Estonia | EVS | Member body | 106 | 1 |
| Ethiopia | IES | Member body | 116 | 3 |
| Finland | SFS | Member body | 622 | 3 |
| France | AFNOR | Member body | 757 | 3 |
| Fiji | DNTMS | Member body | 9 | 3 |
| Ghana | GSA | Member body | 62 | 3 |
| Botswana | BOBS | Member body | 39 | 3 |
| Bahamas | BBSQ | Member body | 7 | 2 |
| Greece | NQIS ELOT | Member body | 224 | 3 |
| Hong Kong Special Administrative Region of China | ITCHKSAR | Correspondent member | 167 | 2 |
| Luxembourg | ILNAS | Member body | 152 | 3 |
| Hungary | MSZT | Member body | 522 | 3 |
| Iceland | IST | Member body | 146 | 3 |
| India | BIS | Member body | 706 | 3 |
| Indonesia | BSN | Member body | 293 | 3 |
| Iran, Islamic Republic of | INSO | Member body | 699 | 3 |
| Ireland | NSAI | Member body | 357 | 3 |
| Eswatini | SWASA | Correspondent member | 15 | 3 |
| Israel | SII | Member body | 282 | 3 |
| Italy | UNI | Member body | 713 | 3 |
| Jamaica | BSJ | Member body | 31 | 3 |
| Grenada | GDBS | Subscriber member | 0 | 0 |
| Japan | JISC | Member body | 734 | 3 |
| Saint Lucia | SLBS | Member body | 19 | 3 |
| Jordan | JSMO | Member body | 74 | 3 |
| Kazakhstan | CTRM | Member body | 163 | 3 |
| Kenya | KEBS | Member body | 268 | 3 |
| Guyana | GNBS | Correspondent member | 5 | 1 |
| Kuwait | KOWSMD | Member body | 19 | 2 |
| Lebanon | LIBNOR | Member body | 35 | 3 |
| Chad | ATNOR | Correspondent member | 7 | 2 |
| Vanuatu | VBS | Correspondent member | 0 | 0 |
| Kyrgyzstan | KYRGYZST | Correspondent member | 10 | 1 |
| Latvia | LVS | Member body | 27 | 3 |
| Libya | LNCSM | Member body | 4 | 1 |
| Lithuania | LST | Member body | 64 | 3 |
| Cambodia | ISC | Correspondent member | 17 | 1 |
| Paraguay | INTN | Correspondent member | 0 | 1 |
| Malaysia | DSM | Member body | 310 | 3 |
| Mali | AMANORM | Member body | 24 | 3 |
| Malawi | MBS | Member body | 20 | 3 |
| Malta | MCCAA | Member body | 59 | 3 |
| Morocco | IMANOR | Member body | 114 | 3 |
| Moldova, Republic of | ISM | Correspondent member | 36 | 3 |
| Mauritius | MSB | Member body | 88 | 3 |
| Georgia | GEOSTM | Correspondent member | 8 | 2 |
| Mexico | DGN | Member body | 154 | 3 |
| Nicaragua | DNM | Correspondent member | 0 | 2 |
| Mongolia | MASM | Member body | 257 | 3 |
| Madagascar | BNM | Correspondent member | 5 | 1 |
| Mozambique | INNOQ | Correspondent member | 9 | 3 |
| Nigeria | SON | Member body | 111 | 3 |
| Nepal | NBSM | Member body | 13 | 3 |
| Dominica | DBOS | Correspondent member | 7 | 3 |
| Norway | SN | Member body | 345 | 3 |
| Myanmar | DRI | Correspondent member | 9 | 3 |
| New Zealand | NZSO | Member body | 213 | 3 |
| Oman | DGSM | Member body | 29 | 3 |
| Pakistan | PSQCA | Member body | 217 | 3 |
| Papua New Guinea | NISIT | Correspondent member | 4 | 1 |
| Netherlands | NEN | Member body | 652 | 3 |
| Panama | DGNTI | Member body | 72 | 3 |
| Peru | INACAL | Member body | 73 | 3 |
| Philippines | BPS | Member body | 177 | 3 |
| Poland | PKN | Member body | 658 | 3 |