| Acronym | Definition |
|---|
| OTSS➣Open System Transport and Session Support |
| OTSS➣Ontario Trust for Student Support (Ontario, Canada) |
| OTSS➣Ottawa Technical Secondary School (Ottawa, Canada) |
| OTSS➣Only the Strong Survive (movie) |
| OTSS➣Online Tutor Sign-Up System (University of California, Santa Cruz) |
| OTSS➣Operations Technology and Shared Services |
| OTSS➣On The Safe Side (London, UK) |
| OTSS➣Operational Telecommunications Switching System |
| OTSS➣Office of Technical Support Services |
| OTSS➣Operations Traffic Switching System |
| OTSS➣Oita TS (Toshiba/Sony) Semiconductor (Japan) |