J15 may refer to:
Vehicles edit
Aircraft edit
- Junkers J 15, a German experimental aircraft
- Shenyang J-15, a Chinese carrier-based jet fighter
Locomotives edit
- GSR Class J15, an Irish steam locomotive
- LNER Class J15, an English steam locomotive class
Ships edit
- INS Investigator (J15), a Sandhayak-class survey ship of the Indian Navy
Other uses edit
- Bacterial pneumonia
- County Route J15 (California), a County route in Tulare County, California
- Elongated square bipyramid, a Johnson solid (J15)
- J15, a Nissan J engine model