All Festivals - I
| IBMA World of Bluegrass | Raleigh | NC | United States | September | Bluegrass |
| IHeartRadio Festival | Las Vegas | NV | United States | September | Variety |
| III Points | Miami | FL | United States | October | Alternative, Electronic, Hip Hop, Indie, Rock |
| Immokalee Bluegrass Festival | Immokalee | FL | United States | April | Bluegrass |
| Industrial Strength Bluegrass Festival | Wilmington | OH | United States | March | Bluegrass |
| Industrial Strength Bluegrass Festival | Wilmington | OH | United States | November | Bluegrass |
| Iron Blossom | Richmond | VA | United States | September | Indie, Rock |
| Island Hopper Songwriting Festival | Fort Meyers | FL | United States | September | Singer/songwriting |