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 |
|---|---|---|---|---|
| Seychelles | SBS | Correspondent member | 20 | 3 |
| Bhutan | BSB | Correspondent member | 21 | 2 |
| Togo | ATN | Correspondent member | 8 | 2 |
| Turkmenistan | MSST | Correspondent member | 5 | 2 |
| Yemen | YSMO | Correspondent member | 0 | 0 |
| 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 |
| Tajikistan | TAJIKSTANDARD | Correspondent member | 10 | 1 |
| Palestine, State of | PSI | Correspondent member | 16 | 3 |
| Lao People's Democratic Republic | DOSM | Correspondent member | 5 | 1 |
| 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 |
| Saint Vincent and the Grenadines | SVGBS | Correspondent member | 0 | 0 |
| Eritrea | ESI | Correspondent member | 4 | 1 |
| Albania | DPS | Correspondent member | 3 | 3 |
| Brunei Darussalam | NSC | Correspondent member | 6 | 3 |
| Honduras | OHN | Correspondent member | 9 | 2 |
| Lesotho | LSI | Correspondent member | 2 | 3 |
| Hong Kong Special Administrative Region of China | ITCHKSAR | Correspondent member | 167 | 2 |
| Eswatini | SWASA | Correspondent member | 15 | 3 |
| Guyana | GNBS | Correspondent member | 5 | 1 |
| Chad | ATNOR | Correspondent member | 7 | 2 |
| Vanuatu | VBS | Correspondent member | 0 | 0 |
| Kyrgyzstan | KYRGYZST | Correspondent member | 10 | 1 |
| Cambodia | ISC | Correspondent member | 17 | 1 |
| Paraguay | INTN | Correspondent member | 0 | 1 |
| Moldova, Republic of | ISM | Correspondent member | 36 | 3 |
| Georgia | GEOSTM | Correspondent member | 8 | 2 |
| Nicaragua | DNM | Correspondent member | 0 | 2 |
| Madagascar | BNM | Correspondent member | 5 | 1 |
| Mozambique | INNOQ | Correspondent member | 9 | 3 |
| Dominica | DBOS | Correspondent member | 7 | 3 |
| Myanmar | DRI | Correspondent member | 9 | 3 |
| Papua New Guinea | NISIT | Correspondent member | 4 | 1 |