| Rank | Abbreviation | Meaning |
|---|
| ***** | COPT | circumoval precipitin test
| |
| *** | COPT | Chronic Obstructive Pulmonary Disease
| |
| ** | COPT | Circum Oval Precipitin Test
| |
| * | COPT | Captain of the Port
| |
| * | COPT | Center for Optimization in Public Transport
| |
| * | COPT | Corporate Office Properties Trust
| |
| * | COPT | Cost and Operational Performance Trades
| |
| * | COPT | Completed Procedure Turn
| |
| * | COPT | completion of optimum period of treatment
| |
| * | COPT | Coin-Operated Pay Telephone
| |
| * | COPT | Columbus Ohio Prime Timers
| |
| * | COPT | Consejería de Obras Públicas y Transportes
| |
| * | COPT | Combined Operations Planning Team
| |
| * | COPT | Capacity Outage Probability Table
| |
| * | COPT | Council on Police Training
| |
| * | COPT | Community Outreach Project Team
| |
| * | COPT | Cobalt Platinum
| |
| * | COPT | Council on Postdoctoral Training
| |
| * | COPT | Council on Osteopathic Postdoctoral Training
| |
| * | COPT | Customer Operated Pay Telephone
| |
| * | COPT | Coptic Orthodox Publication & Translation
| |
| * | COPT | Customer Owned Pay Telephone
| |
| * | COPT | Community Older People Team
| |
| * | COPT | Corporate Office Property Trust
| |
| * | COPT | Community Outcomes Project Team
| |