| Abbreviation | Definition |
|---|---|
| SAIS | Seoul Academy International School |
| SAIS | Services Accountability Improvement System |
| SAIS | Southern |
| SAIS | Southern Association for Information Systems |
| SAIS | Southern Association of Independent Schools |
| SAIS | Strange Adventures in Infinite Space |
| SAIS | Student Accountability Information System |
| SAIS | Suffix Array Induced Sorting |
| SAIS | Supernatural Acquisitions and Investigations Squad |
| SAISD | Substance and Alcohol Intervention Services for the Deaf |
| SAIT | San Antonio Intermodal Terminal |
| SAIT | Society For Auditory Intervention Techniques |
| SAIT | Southern Alberta Institute of Technology |
| SAIT | Super Advanced Intelligent Tape |
| SAIW | South Africans In Wellington |
| SAJ | Sam and Johann |
| SAJ | Secret Agent Josephine |
| SAJ | Shipbuilders Association of Japan |
| SAJ | Sir Ace Jr |
| SAJ | Super Action Jenny |