All Festivals - U
| Ubbi Dubbi | Ennis | TX | United States | April | Disco, Electronic, House |
| UllrGrass Music Festival | Golden | CO | United States | January | Bluegrass, Americana, & roots music |
| Uncle Boojie’s Roots Revue | Louisville | KY | United States | May | Bluegrass |
| Uncle Dave Macon Days | Murfreesboro | TN | United States | October | Bluegrass |
| Under the Big Sky Fest | Whitefish | MT | United States | July | Country, Folk, Rock |
| Underground Music Showcase (UMS) | Denver | CO | United States | July | Indie |
| Upper East Tennessee Fiddler’s Convention | Flag Pond | TN | United States | April | Bluegrass |
| Upperco Music Festival | Upperco | MD | United States | September | Bluegrass |
| Utah Arts Festival | Salt Lake City | UT | United States | June | Vsual arts, performing arts, music, with a stage dedicated to singer-songwriter, folk, and Americana artists. |