SJO
| Acronym | Definition |
|---|---|
| SJO | San Jose, Costa Rica - Juan Santamaria International (Airport Code) |
| SJO | St. Joseph-Ogden High School (St. Joseph, IL) |
| SJO | Serious Juvenile Offender |
| SJO | Studium Jezykow Obcych (Polish: Foreign Language Study; Wroclaw University of Technology; Poland) |
| SJO | Sentimental Journey Orchestra (Atlanta, GA) |
| SJO | Stabekk Janitsjar Orkester (Stabekk Symphonic Band; Norway) |