STOS
| Acronym | Definition |
|---|---|
| STOS | Star Trek Original Series |
| STOS | Standard Tender of Service |
| STOS | Store String |
| STOS | Shell Todd Oil Services (est. 1955; New Plymouth, New Zealand) |
| STOS | Secure Trusted Operating System Consortium (George Washington University; Washington, DC) |
| STOS | Standard Tender of Service (US General Services Administration) |
| STOS | Software Technology Operating Solutions (New York) |
| STOS | Spacecraft Test and Operations System |