| Jam Cruise | Miami | FL | United States | February | 2nd Weekend | 6 Days | Alternative, Rock, Jam | Music |
| Jeezum Crow Festival | Jay | VT | United States | July | 3rd Weekend | 2 Days | Bluegrass, Rock | Music |
| Jekyll Island New Year’s Bluegrass Festival | Jekyll Island | GA | United States | January | 1st Weekend | 3 Days | Bluegrass | Music |
| Jenny Brook Bluegrass Festival | Tunbridge | VT | United States | June | 4th Weekend | 3 Days | Bluegrass | Music |
| Jerusalem Ridge Bluegrass Celebration | Rosine | KY | United States | September | 2nd Weekend | 4 Days | Bluegrass | Music |
| Jerusalem Ridge Bluegrass Celebration | Rosine | KY | United States | September | 1st Weekend | 4 Days | Bluegrass | Music |
| JoCo Bluegrass Festival | Selma | NC | United States | September | 1st Weekend | 3 Days | Bluegrass | Music |
| Joe Val Bluegrass Music Festival | Framingham | MA | United States | February | President’s Day Weekend | 3 Days | Bluegrass | Music |
| John Coltrane Jazz & Blues Fest | High Point | NY | United States | September | Labor Day Weekend | 2 Days | Blues, Jazz, Latin | Music |
| Joshua Tree Festival Fall | Joshua Tree | CA | United States | October | 2nd Weekend | 4 Days | Jam, Rock | Music |
