| Abbreviation | Definition |
|---|---|
| CNSTR | Construction |
| CNTCI | Chinese New Technique Construction Investment |
| CO | Change Order |
| CO | Cleanout |
| COAA | Construction Owners Association of Alberta |
| COAA | Construction Owners Association of America |
| COAA | Constructions Owners Association of Alberta |
| COC | Contractor Of Choice |
| COCA | Council of Ontario Construction Associations |
| COCA | Council of Owners and Construction Associates |
| COCP | Code of Construction Practice |
| CODC | Construction Opportunities Development Council |
| COE | Corps Of Engineers |
| CofQ | Certificate of Qualification |
| COMET | Construction Organizing Membership Education Training |
| CONST | Construction |
| Constr | construction |
| CONSTRUCT | Construction |
| COP | Construction and Operations Plan |
| COPE | Construction Occupancy Protection Exposure |