CMO may refer to: Business Chief marketing officer Chief medical officer, the senior government official designated head of medical services Chief merchandising officer Collateralized mortgage obligation, a type of complex debt security Contract manufacturing organization, a pharmaceutical manufacturing outsourcing organization Collective management organization, an organisation that manages intellectual property rights, like copyrights, on behalf of rightsholders. Organizations Chicago, St. Paul, Minneapolis and Omaha Railway Chi Mei Optoelectronics, producer of TFT LCD panels Citizens' Municipal Organisation, Australian political organisation Commodore's Messenger Organization, a high-ranking group with the Scientology Sea Organisation Congressional caucus or congressional member organization Science and engineering Central massive object at the center of a galaxy, either a supermassive black hole, or a nuclear star cluster Cetyl myristoleate, a type of fatty acid ester Corticosterone 18-monooxygenase, an enzyme involved in steroid hormone metabolism Cubic mile of oil, a global-scale measure of energy, roughly equal to the amount of oil consumed worldwide each year Comfort measures only, a medical abbreviation for an end-of-life care instruction Other uses Canadian Mathematical Olympiad Cyprus Mathematical Olympiad, organised by the Cyprus Mathematical Society CAMPUS Magazine Online Check Mii Out, channel for the Wii Civil-military operations, activities of a military force Command: Modern Operations, commercial wargaming software See also CMOS (disambiguation)