| Acronym | Definition |
|---|
| ATIN➣Adoption Taxpayer Identification Number (US IRS) |
| ATIN➣Access to Information Network (Philippines) |
| ATIN➣Acute Tubulointerstitial Nephritis |
| ATIN➣ATEC Test Integration Network |
| ATIN➣Alien Taxpayer Identification Number |
| ATIN➣Application, Transport, Internetwork, Network (TCP Model Layers ) |