| Acronym | Sense | Language | Topics |
|---|---|---|---|
| ONS | Organisme National de Surveillance | In French | |
| ONS | Oranje Nassau Sportvereeniging | In Dutch | → Organizations and associations → Sport, physical exercises |
| ONS | Oranje Nassau Sneek | In Dutch | → Organizations and associations → Sport, physical exercises |
| ONS | Opérateur National de Sécurité | In French | → Accidents, risks, safety |