| Acronym | Meaning |
| MARC | MAchine Readable Cataloging (often Also Defined As MAchine Readable Code) |
| QM | Quality Management - Quantum Mechanics - Queen Mother |
| UNDE | Union Of National Defence Employees (Canada) |
| COTS | Commercial Off The Shelf |
| BSX | Bendigo Stock Exchange |
| RAE | UK Royal Aircraft Establishment (?1991) |
| AS | Adult Swim -Assamese Language (ISO 639-1 Code) - Attosecond |
| SWE | Sweden (ISO 3166 Trigram) |
| YC | Yottacoulomb |
| CFA | Cat Fanciers' Association - Chartered Financial Analyst - Colour Filtering Array - County Fire Authority - Covering Force Area |