SJU
| Acronym | Definition |
|---|---|
| SJU | Saint Joseph's University |
| SJU | St. John's University |
| SJU | St Jerome's University (California) |
| SJU | San Juan, PR, USA - Luis Munoz Marin International (Airport Code) |
| SJU | SESAR (Single European Sky ATM (Air Traffic Management) Research) Joint Undertaking (European air traffic control) |