| Abbreviation | Definition |
|---|---|
| SNI | Shapiro Negotiations Institute |
| SNI | Solutions Network, Inc. |
| SNI | Southern Newspapers, Inc. |
| SNI | SparkNET Interactive |
| SNI | System News, Inc. |
| SNIA | Storage Networking Industry Association |
| SNIC | Superior National Insurance Company |
| SNII | Seda Nelson Mandela Bay ICT Incubator |
| SNIL | Scottish and Newcastle India, LTD. |
| SNIL | Siemens Nixdorf Information Systems, LTD. |
| SNIN | Solutions for Networking and InterNet |
| SNJ | Smith and Jones Antique Ford Parts |
| SNJ | Southern Net Jersey |
| SNK | Shin Nihon Kikaku |
| SNNT | SN, Ltd. |
| SNNU | SN, Ltd. (B) |
| SNOC | Seychelles National Oil Company |
| SNOC | Sharjah National Oil Corporation |
| SNOC | Southern Nuclear Operating Company |
| SNOW | Snowflake Inc. |