| Acronym | Definition |
|---|
| LJ | Laser Jet (Hewlett Packard) |
| LJ | Live Journal (website/service) |
| LJ | Library Journal (periodical) |
| LJ | Ljubljana, Slovenia (license plate) |
| LJ | Larry Johnson (basketball player) |
| LJ | La Jolla |
| LJ | Loja (Portuguese: store; postal usage) |
| LJ | Long Jump |
| LJ | LeBron James (basketball player) |
| LJ | Learning Journey (Singapore) |
| LJ | Lord Justice |
| LJ | Linux Journal |
| LJ | Little John |
| LJ | Lowenstein-Jensen |
| LJ | Lashkar i Jhangvi |
| LJ | Life Jacket |
| LJ | Line Judge (football) |
| LJ | Love Jones (band) |
| LJ | Leroy Jenkins (composer/musician) |
| LJ | Luke Jackson (NBA Player) |
| LJ | Light Jockey (gaming) |
| LJ | Lichtjahr (German: lightyear) |
| LJ | Lapse in Judgment |
| LJ | Laskar Jihad (Indonesian terrorist group) |
| LJ | Los Juimos (Chilean slang: off we go) |
| LJ | Lewiston Journal |
| LJ | Legendary Jedi (Dark Forces 2: Jedi Knight Clan) |