SPSJ
| Acronym | Definition |
|---|---|
| SPSJ | Spectroscopical Society of Japan (est. 1951) |
| SPSJ | Society of Polymer Science, Japan |
| SPSJ | Spark Plasma Sintering/Joining (materials) |
| SPSJ | Sport Parachutist's Safety Journal |
| SPSJ | St. Peter's and St. James' (Hereford, England, UK) |