| MCP&I | Microsoft Certified Professional and Internet 
| Others |
| MCPI | Maine Community Policing Institute
| Others |
| MCPI | Manchester Clinical Placement Index
| Others |
| MCPI | Mandan Chrysler Plymouth, Inc.
| Others |
| MCPI | Map Cell Parcel Identifier
| Others |
| MCPI | Marxist Communist Party of India
| Others |
| MCPI | McMaster Community Poverty Initiative
| Others |
| MCPI | Med Cannabis Pharma Inc
| Others |
| MCPI | Medical Care Price Index
| Others |
| MCPI | Medical Conference Planners International
| Others |
| MCPI | Medical Conference Planners, Inc.
| Others |
| MCPI | Medical Consumer Price Index
| Others |
| MCPI | Michigan Council of Professional Investigators
| Others |
| MCPI | Microfinance Council of the Philippines Inc
| Others |
| MCPI | Mixed Criticality Prior ity
| Others |
| MCPI | Monroe County Paranormal Investigations
| Others |