| Abbreviation | Definition |
|---|---|
| CM | Case Marker |
| CMA | C M Architecture |
| CMAI | Conserving Modern Architecture Initiative |
| CMF | Color, Material, Finish |
| CMF | Colour, Materials, and Finish |
| CMP | Corrugated Metal Pipe |
| CMR | Compact Measurement Record |
| CNDA | Certified Network Defence Architect |
| CNH | Cold Normal Hot |
| CNOIA | Commission Nationale des Opérations Immobilières et de l'Architecture (French: National Commission on Real Estate Transactions and Architecture) |
| CO | Convenience Outlet |
| COA | Council Of Architecture |
| COA | Craft Of Architecture |
| COA | Customer Oriented Architecture |
| CODA | Collaboration of Designers and Architects |
| COE | Criteria Of Effect evaluation |
| COLA | Covered Outdoor Learning Area |
| COML | Commercial Building |
| CON | Construction |
| CONST | CONSTruction |