| Acronym | Definition |
|---|
| IDNA➣Internationalized Domain Names in Applications (IETF) |
| IDNA➣Internationalized Domain Names in Applications |
| IDNA➣Intelligent Dual Nano Architecture |
| IDNA➣Irish Dental Nurses Association (Bettystown, Ireland) |
| IDNA➣Instructive District Nursing Association (est. 1886; Boston, MA) |
| IDNA➣International Deposit Netting Agreement (British Bankers' Association; London, England, UK) |
| IDNA➣Iron Deficient-No Anemia |
| IDNA➣Integral Depletable Neutron Absorber |