| Acronym | Meaning |
| PEO | ?…??????… ???…‡??? ???†???‰?… (Greek For Pancyprian Federation Of Labour) - Philanthropic Educational Organization - PolyEthylene Oxide - Professional Employer Organization - Professional Engineers Ontario |
| QSTAG | Quadripartite Standardization Agreement (cue-stag) |
| CHIP | California Highway Patrol |
| MEC | Maine Central Railroad (AAR Reporting Mark) - Manta |
| LLC | Limited Liability Company |
| NICAP | National Investigations Committee On Aerial Phenomena |
| NAU | Nauruan Language (ISO 639-2 Code) |
| HKD | Hong Kong Dollar (ISO 4217 Currency Code) |
| AG | Attogram |
| BARDA | Biomedical Advanced Research & Development Agency |