| Acronym | Definition |
|---|
| UAN | Universidad Autonoma de Nayarit (Spanish; Mexican university) |
| UAN | Ujian Akhir Nasional (Indonesian: National Final Examination) |
| UAN | Urea-Ammonium Nitrate (fertilizer compound) |
| UAN | United Animal Nations |
| UAN | Universal Application Network |
| UAN | Universal Area Network |
| UAN | United American Nurses |
| UAN | Universal Access Number |
| UAN | Universal Application Network (Siebel Systems) |
| UAN | User Account Number |
| UAN | University After Next |
| UAN | Underwater Acoustic Network (EU) |
| UAN | Unione Accademica Nazionale (Italy; National Academic Union) |
| UAN | User Access Node |
| UAN | Uric Acid Nephrolithiasis |
| UAN | Urban Agriculture News (newsletter) |