Wikipedia
QJ
QJ may refer to:
- QJ (New York City Subway service), a defunct New York City Subway service, now superseded by the J/Z services
- QJ, a UHF band frequency
- China Railways QJ, a Chinese 2-10-2 steam locomotive
- Quarterly Journal of Economics
- Quarterly Journal of Austrian Economics
- ATCvet code QJ Antiinfectives for systemic use, a section of the Anatomical Therapeutic Chemical Classification System for veterinary medicinal products