Pana la finele anului 2004, ISO eliberase un numar total de 670.399 de certificate ISO 9001:2000, in 154 de tari. Numarul certificatelor ISO 14001 ajungea, la aceeasi data, la 90.569, in 127 de tari.
| ISO 9001:2000 | | ISO 14001 | |
| | 132.926 | Japonia | 19.584 |
| Italia | 84.485 | | 5.562 |
| M. Britanie | 50.884 | Spania | 6.473 |
| Japonia | 48.989 | M. Britanie | 6.253 |
| Spania | 40.972 | Italia | 4.785 |
| SUA | 37.285 | SUA | 4.759 |
| Franta | 27.101 | | 4.320 |
| | 26.654 | Suedia | 3.478 |
| | 17.365 | Franta | 2.955 |
| | 12.558 | Coreea | 2.609 |
Sursa: International Organization for Standardization