- DCMO stands for Deputy Chief Management Officer (US DoD)
- DCMO stands for Deputy Chief Military Observer (US DoD)
- DCMO stands for Delaware-Chenango-Madison-Otsego (Board of Cooperative Educational Services; New York)
- DCMO stands for Deputy to the Commander for Military Operations (US Africa)
- DCMO stands for Defence Crisis Management Organisation (UK)
- DCMO stands for Dutch Configuration Management Office
- DCMO stands for Division COMSEC Management Officer