| Acronym | Meaning |
| OCFS | Oracle Cluster File System |
| YG | Yottagram |
| JNLP | Java Network Launch Protocol |
| NYHA | New York Heart Association |
| II | Two (in Roman Numerals) |
| SSK | Hunter-Killer Submarine (retired US Navy Hull Classification) |
| AZ | Arizona (postal Symbol) - Azerbaijan (ISO 3166 Digram) |
| TM! | Tenchi Muyo! |
| MHRA | (UK) Medicines And Healthcare Products Regulatory Agency |
| SWAP | Surface Waters Acidification Programme |