J
- Ivar Jacobson – Unified Modeling Language, Object Management Group
- Ramesh Jain
- Jonathan James
- David S. Johnson
- Stephen C. Johnson
- Cliff Jones – Vienna Development Method (VDM)
- Michael I. Jordan
- Aravind K. Joshi
- Bill Joy (born 1954) – Sun Microsystems, BSD UNIX, vi, csh
- Steve Jobs
Read more about this topic: List Of Computer Scientists