OSSM
| Acronym | Definition |
|---|---|
| OSSM | Oklahoma School of Science and Mathematics |
| OSSM | On-Demand, Self-Service, Scalable, Measurable (cloud computing) |
| OSSM | Oil Spill Simulation Model |
| OSSM | One Sprint Systems Management |
| OSSM | Open System Support Matrix |
| OSSM | Organization of Social Studies Majors (University of the Philippines Diliman) |
| OSSM | Orthodontic Society of Serbia and Montenegro |