| Acronym | Definition |
|---|
| MCNP➣Mammoth Cave National Park (Kentucky) |
| MCNP➣Monte Carlo N-Particle |
| MCNP➣Monte Carlo Neutron and Photon (transport code) |
| MCNP➣Massachusetts Coalition of Nurse Practitioners |
| MCNP➣Monitoring Completed Navigation Projects |
| MCNP➣Mt. Cook National Park (New Zealand) |