| Acronym | Definition |
|---|
| OMTC➣Off Main Thread Compositing (computing) |
| OMTC➣Ontario Masonry Training Centre (Mississauga, Ontario, Canada) |
| OMTC➣Ozark Mountain Technical Center (Mountain Grove, MO) |
| OMTC➣Oswestry Musical Theatre Company (UK) |
| OMTC➣Oman Mobile Telecommunications Company (est. 2004) |
| OMTC➣Overall Mass Transfer Coefficient |
| OMTC➣Orion Metal Trading Corporation (Vienna, VA) |