Organizations
- Chemins de Fer du Morbihan, a metre gauge railway network in Brittany, France
- Cooler Master, a computer hardware manufacturer.
- Comercial Mexicana, a retail store.
- Copa Airlines, which has the IATA airline designator "CM"
- Correio da Manhã, a Portuguese daily newspaper
- Lazarists, also known as Congregatio Missionis, the Congregation of Priests of the Mission in the Roman Catholic Church
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