John Temmerman's Jazz Obsession Quartet
- Includes information on recordings, MP3 samples, reviews, gig updates, and product ordering information.
- http://www.jazzobsession.com/

Jason, Sonya
- Contemporary jazz player based in the San Francisco Bay Area of California. Site includes full discography, music clips, biography, gig schedule, and photographs.
- http://www.sonyajason.com/

Johnsen, Brinck
- Norwegian jazz saxophone player (alto and baritone).
- http://www.jazzactive.com/

Juritz, Robert
- Born in South Africa, now resident in the UK. Experience with many South African jazz musicians. Biography.
- http://www.robertjuritz.com/