| Acronym | Meaning |
| CTC | Closed Timelike Curve (relativity) - (U.S.) Combat Training Center |
| ANC | African National Congress |
| JCS | Joint Chiefs Of Staff |
| IVL | Inter-Visibility Line |
| CPF | Calibration Parameter File - Canadian Patrol Frigate |
| GJ | Gigajoule - Grenada (FIPS 10-4 Country Code) |
| HIDACZ | High-Density Airspace Control Zone (high Dak Zed/zee) |
| KA | Kamov Design Bureau |
| MDV | Maldives (ISO 3166 Trigram) |
| LPG | Liquefied Petroleum Gas (cf. LNG) |