| CMGA | California middle grades alliance 
| Others |
| CMGA | Canadian Meat Goat Association
| Others |
| CMGA | Canadian Mounted Games Association
| Others |
| CMGA | Canadian Mushroom Growers Association
| Others |
| CMGA | Canterbury Mounted Games Association
| Others |
| CMGA | Celebrity Martini Glass Auction
| Others |
| CMGA | Certified Managing General Agency
| Others |
| CMGA | Certified Managing General Agent
| Others |
| CMGA | Chinese Medical Genetics Association
| Others |
| CMGA | CIMA Management gateway assessment
| Others |
| CMGA | CIMA Masters Gateway Assessment
| Others |
| CMGA | Coastal Master Gardener Association
| Others |
| CMGA | College Mixte Gaetan Amedee
| Others |
| CMGA | Computer Management Group Australia
| Others |
| CMGA | Computer Measurement Group Australia
| Others |
| CMGA | Connecticut Master Gardener Association
| Others |
| CMGA | Connecticut Master Gardeners Association
| Others |
| CMGA | Control Moment Gyro Assembly
| Others |
| CMGA | Crayfish Medial Giant Axon
| Others |
| CMGA | Crimson Medical Group Advantage
| Others |
| CMGA | Czech mountain guide association
| Others |