- The Jeff McLaughlin Quartet -- The Jeffery Singers
- The Jeffrey Allens -- The Jellys
- The Jenerators -- The Jennys
- The Jeremiah Johnson Band -- The Jerks
- The Jerky Boys -- The Jesters
- The Jesters -- The Jesus Rehab
- The Jesus Trip -- The Jets
- The Jets -- The Jetsonics
- The Jetsonnes -- The Jezabels
- The Jezebel Spirit -- The Jiggy Vampires
- The Jigsaw Seen -- The Jim Italiano Band
- The Jim Ivins Band -- The Jim Yoshii Pile-Up
- The Jimbos -- The Jimmy Cobb Quartet
- The Jimmy Cotton Blues Quartet -- The Jimmy Rogers All-Stars
- The Jimmy Rowles Septet -- The Jingle Punks Hipster Orchestra
- The Jinkies -- The Jive Bombers
- The Jive Bombers -- The Jiving Juniors
- The JK Project -- The Jody Grind
- The Jody Grind -- The Joe Goode Performance Group
- The Joe Gordon Skiffle Group -- The Joe Poku Band
- The Joe Richardson Express -- The Johanssons