JSM
- Al Shabiba Mazraa Beirut
- JSM Béjaïa
- JSM Chéraga
- JSM Tiaret
- John Smith (explorer)
- John Stuart Mill
- Joint Statistical Meetings
- Joint Strike Missile
- Joseph Smith—Matthew
- Josie Maran
- Journal for the Academic Study of Magic
- Journal of Sexual Medicine
- Julius Sumner Miller
- Just Shoot Me!
- Stanford University
- The Japanese School of Melbourne