OPTC
| Acronym | Definition |
|---|---|
| OPTC | Ontario Pipe Trades Council (Hamilton, Ontario, Canada) |
| OPTC | Oriental Professional Thai Chef (School of the Oriental Hotel Apprenticeship Programme; Thailand) |
| OPTC | Operating Permit to Construct (Nevada) |
| OPTC | Occult Papillary Thyroid Cancer (oncology) |
| OPTC | Ontario Pesticide Training and Certification (University of Guelph Ridgetown; Ridgetown, Ontario, Canada) |
| OPTC | Ontario Property Tax Credit (Canada) |