SAIN
| Acronym | Definition |
|---|---|
| SAIN | Southern Appalachian Information Node (USGS National Biological Information Infrastructure) |
| SAIN | Sexual Abuse Intervention Network (various locations) |
| SAIN | Saskatchewan Archival Information Network |
| SAIN | Support American Intervention Now |
| SAIN | Standard Audit Index Number (US IRS) |
| SAIN | Status Already Inhibited (Alcatel) |
| SAIN | Sears Advanced Intelligent Network (Sprint/Sears) |
| SAIN | Synchronous Adaptive Infrastructure Network (computer networking) |