IDNA
| 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 |