All Festivals - I
| IBMA World of Bluegrass | Raleigh | NC | United States | September | 3rd Weekend | 5 Days | Bluegrass | Music |
| IHeartRadio Festival | Las Vegas | NV | United States | September | 3rd Weekend | 2 Days | Variety | Music |
| III Points | Miami | FL | United States | October | 3rd Weekend | 2 Days | Alternative, Electronic, Hip Hop, Indie, Rock | Music |
| Immokalee Bluegrass Festival | Immokalee | FL | United States | April | 4th Weekend | 1 Day | Bluegrass | Music |
| Industrial Strength Bluegrass Festival | Wilmington | OH | United States | March | 3rd Weekend | 3 Days | Bluegrass | Music |
| Industrial Strength Bluegrass Festival | Wilmington | OH | United States | November | 2nd Weekend | 3 Days | Bluegrass | Music |
| Iron Blossom | Richmond | VA | United States | September | 3rd Weekend | 2 Days | Indie, Rock | Music |
| Island Hopper Songwriting Festival | Fort Meyers | FL | United States | September | 3rd Weekend | 10 Days | Singer/songwriting | Music |