| Acronym | Definition |
|---|
| CIDN | Convención Internacional Sobre los Derechos del Niño (Spanish) |
| CIDN | Consejo Ibérico para la defensa de la Naturaleza (Spanish) |
| CIDN | Centre Interuniversitaire de Droit Notarial (French: Interuniversity Notarial Law Center; Belgium) |
| CIDN | Canine Inherited Demyelinative Neuropathy |
| CIDN | Centro de Información y Documentación (Spanish) |
| CIDN | Curious Incident of the Dog in the Night-Time (Mark Haddon book) |
| CIDN | Contrôles Inhibiteurs Diffus Induits par Stimulation Nociceptive (French) |
| CIDN | Conseil Ibérique pour la Défense de la Nature (Spanish: Iberian Council for the Defence of Nature) |
| CIDN | China Internet Domain Names |
| CIDN | Cultureel Identificatie Nummer (Dutch) |
| CIDN | Circuit Identification Number |
| CIDN | Certified Interior Designer of Nebraska |
| CIDN | Consultoría Integral en Desarrollo de Negocíos (Spanish) |