| Acronym | Definition |
|---|
| IDN | Internationalized Domain Name |
| IDN | Indonesia (ISO Country code) |
| IDN | Identification Number |
| IDN | Integrated Digital Network |
| IDN | International Development Network |
| IDN | Integrated Data Network |
| IDN | Integrated Delivery Network |
| IDN | Integration Developer News (online newspaper) |
| IDN | Inferior Dental Nerve |
| IDN | International Directory Network |
| IDN | International Data Number |
| IDN | Integrated Data Network (AUTODIN II) |
| IDN | Intelligent Design Network |
| IDN | Intel Developer Network |
| IDN | InterDomain Networks (Sun Microsystems) |
| IDN | I Don't No (chat) |
| IDN | Intradermal Nevus (lesion) |
| IDN | International Data Network |
| IDN | Interdigital Nerve |
| IDN | In Dei Nomine (Latin: In the name of God) |
| IDN | Institut Industriel du Nord de la France (French former name of Ecole Centrale de Lille) |
| IDN | Information Digit Node (Sprint) |
| IDN | Input Distribution Network |