| Acronym | Meaning |
 | CN | Canadian National (railway) -China (ISO 3166 Digram) - Comoros (FIPS 10-4 Country Code) |
| UPTN | Universal Personal Telecommunications Number - Upper Peninsula Telehealth Network |
| FAC | Forward Air Controller - Front Of Allies For Change - Frontal Affinity Chromatography - Full Aperture Calibrator |
| ASCIET | All Services Combat Identification Evaluation Team |
| MNMF | Multi-National Maritime Force |
| PIN | Personal Identification Number |
| IIT | Illinois Institute Of Technology - Indian Institutes Of Technology - Indiana Institute Of Technology |
| NE | Neon |
| VM | Vietnam (FIPS 10-4 Country Code) |
| PDU | Police Dog Unit - Power Distribution Unit - Protocol Data Unit |
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