ATIN
| 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 ) |