PNM can refer to:
- PNM Resources or its subsidiary Public Service Company of New Mexico, an electricity and natural gas utility serving primarily the State of New Mexico in the United States
- People's National Movement, a political party in Trinidad and Tobago
- Penitentiary of New Mexico, a prison
- Portable anymap, a simple type of portable image format
- PNM or pnm://, the older version of Real Time Streaming Protocol