| Acronym | Definition |
|---|
| OSTC | Open Source Training and Consulting |
| OSTC | Open Systems Testing Consortium |
| OSTC | Open Source Technology Center |
| OSTC | Federal Office for Scientific, Technical and Cultural Affairs (Belgium) |
| OSTC | Ontario Sales Tax Credit (Ontario, Canada) |
| OSTC | Open Source Training and Consulting (Nuremberg, Germany) |
| OSTC | On-Scene Tactical Commander |
| OSTC | Open System Testing Consortium |
| OSTC | Outward Spiral Theatre Company (Minneapolis, MN) |
| OSTC | Oshkosh State Teachers College (Oshkosh, WI) |
| OSTC | Oregon Society of Tax Consultants, Inc. |