WJO
| Acronym | Definition |
|---|---|
| WJO | Westchester Jazz Orchestra (Chappaqua, NY) |
| WJO | Weak Jump Overcall |
| WJO | World Jado Organisation (martial arts) |
| WJO | World Journal of Orthodontics |
| WJO | Windjammers Jazz Orchestra |
| WJO | Web Journal of Ophthalmology |
| WJO | Waco Jazz Orchestra (est. 1989; Waco, TX) |