| Cabot July Jubilee | Cabot | AR | United States | July | 4th of July Weekend | 2 Days | A variety of genres are typically represented, including country, rock, pop, and patriotic music. | Community Festival |
| Calico Bluegrass Festival | Yermo | CA | United States | May | 2nd Weekend | 2 Days | Bluegrass | Music |
| California WorldFest | Grass Valley | CA | United States | October | 2nd Weekend | 3 Days | Folk, Jam, Reggae | Music |
| Cameron Bluegrass Festival | Cameron | WI | United States | September | 1st Weekend | 3 Days | Bluegrass | Music |
| Camp Deep End | Navarro | CA | United States | September | 3rd Weekend | 3 Days | Jam | Music |
| Camp Redwoods | Navarro | CA | United States | August | 3rd Weekend | 3 Days | Jam | Music |
| Camp Springs Bluegrass Festival | Elon | NC | United States | September | 1st Weekend | 2 Days | Bluegrass | Music |
| Carl Junction Bluegrass Festival | Carl Junction | MO | United States | September | 4th Weekend | 1 Day | Bluegrass | Music |
| Carolina Bible Camp Bluegrass Festival | Mocksville | NC | United States | September | 2nd Weekend | 1 Day | Bluegrass | Music |
| Carolina Country Music Festival | Myrtle Beach | CA | United States | June | 1st Weekend | 4 Days | Country | Music |
| Carolina Hills Fiddle Fest | Union Grove | NC | United States | May | Memorial Day Weekend | 4 Days | Bluegrass | Music |
| Carolina In The Fall Music & Food Festival | Wilkesboro | NC | United States | September | 3rd Weekend | 2 Days | Bluegrass | Music |
| Carter County Shriners Bluegrass Festival | Olive Hill | KY | United States | July | 3rd Weekend | 3 Days | Bluegrass | Music |
| Cascade Equinox Festival | Redmond | OR | United States | September | 3rd Weekend | 3 Days | Bluegrass, Electronic, Jam, Soul | Music |
| CaveFest | Pelham | TN | United States | October | 2nd Weekend | 3 Days | Bluegrass, Americana, Jam | Music |
| Caveman Music Festival | Weston | CO | United States | September | Labor Day Weekend | 3 Days | Bluegrass, Country, Folk, Rock | Music |
| Cayamo | Miami | FL | United States | February | Last Weekend | 8 Days | Bluegrass, Country, Folk, Indie, Rock | Music |
| CBA South State 48 Bluegrass by the Sea | Carlsbad | CA | United States | November | 2nd Weekend | 4 Days | Americana, Roots, Rock, Blues, Country, and various Americana subgenres. | Music |
| CBA Fall Campout | Lodi | CA | United States | October | 2nd Weekend | 7 Days | Bluegrass | Music |
| CBA Golden Old-time Campout | Guerneville | CA | United States | August | 4th Weekend | 4 Days | Bluegrass | Music |
| Cedar Springs Bluegrass Gospel Fest | Osage | IA | United States | July | 2nd Weekend | 4 Days | Bluegrass | Music |
| Charleston Beer Festival | Charleston | SC | United States | October | 4th Weekend | 1 Day | Rock, Jazz, Blues, Country Funk | Beer |
| Charleston Bluegrass Festival | Charleston | SC | United States | March | Last Weekend | 2 Days | Bluegrass | Music |
| Charlotte Bluegrass Festival | Charlotte | MI | United States | June | 4th Weekend | 3 Days | Bluegrass | Music |
| Charm City Bluegrass Festival | Baltimore | MD | United States | May | 1st Weekend | 2 Days | Bluegrass, Americana, folk, and acoustic music | Music |
| Cherokee Bluegrass Festival | Cherokee | NC | United States | June | 2nd Weekend | 3 Days | Bluegrass | Music |
| Cherokee Music Fest | Cherokee | VA | United States | September | 2nd Weekend | 3 Days | Bluegrass | Music |
| Cherry Bounce Festival | Forest City | NC | United States | June | 2nd Weekend | 2 Days | Bluegrass | Music |
| Chet Kingery Memorial Bluegrass Festival | Shelbyville | IL | United States | May | 2nd Weekend | 2 Days | Bluegrass | Music |
| Cheyenne Frontier Days | Cheyenne | WY | United States | July | 3rd Weekend | 10 Days | Country | Music |
| Chicago Jazz Festival | Chicago | IL | United States | August | 4th Weekend | 4 Days | Jazz | Music |
| Christmas in the Smokies | Gatlinburg | TN | United States | November | 3rd Weekend | 3 Days | Bluegrass | Music |
| Cincinnati Music Festival | Cincinnati | OH | United States | July | 4th Weekend | 3 Days | Pop, R&B | Music |
| Clatskanie Bluegrass Festival | Clatskanie | OR | United States | September | 2nd Weekend | 3 Days | Bluegrass | Music |
| Clifftop Appalachian Music Festival | Clifftop | WV | United States | August | 1st Weekend | 5 Days | Old-time | Music |
| Cline Country Bluegrass Festival | Sonoma | CA | United States | July | 2nd Weekend | 1 Day | Bluegrass | Music |
| CMA Music Festival | Nashville | TN | United States | June | 1st Weekend | 4 Days | Country | Music |
| Coal Miners Appreciation Bluegrass Festival | McClure | VA | United States | August | 2nd Weekend | 3 Days | Bluegrass | Music |
| Coastal Country Jam | Long Beach | CA | United States | September | 3rd Weekend | 2 Days | Country | Music |
| Cocke County Bluegrass Festival | Newport | TN | United States | June | Last Weekend | 3 Days | Bluegrass | Music |
| Coke Ovens Bluegrass Festival | Dunlap | TN | United States | June | 1st Saturday | 1 Day | Bluegrass | Music |
| Colt Adams Memorial Festival (CAM Fest) | Flemingsburg | KY | United States | July | 1st Weekend | 3 Days | Bluegrass | Music |
| Columbia Gorge Bluegrass Festival | Stevenson | WA | United States | July | 4th Weekend | 4 Days | Bluegrass | Music |
| Common Ground on the Hill Roots Music & Arts Festival | Westminster | MD | United States | July | 2nd Weekend | 1 Day | Roots music, Americana, folk, traditional music | Music |
| Connecticut Sea Music Festival | Essex | MA | United States | June | 1st Weekend | 4 Days | Americana | Music |
| Corpus Christi Songwriting Festival | Corpus Christi | TX | United States | February | 3rd Weekend | 3 Days | Songwriting | Music |
| Cosmic Songwriters Festival – The Orbit Room | Bloomington | IN | United States | May | 3rd Weekend | 4 Days | Singer-songwriter, Americana, folk, with a focus on intimate performances and artist interaction | Music |
| Country Bay Music Festival | Miami | FL | United States | November | 2nd Weekend | 2 Days | Country | Music |
| Country Boom | West Salem | WI | United States | July | 2nd Weekend | 3 Days | Country | Music |
| Country Calling | Ocean City | MD | United States | October | 1st Weekend | 2 Days | Country | Music |
| Country Concert | Fort Loramie | OH | United States | July | 2nd Weekend | 4 Days | Country | Music |
| Country Fan Fest | Tooele | UT | United States | July | 4th Weekend | 4 Days | Country | Music |
| Country Jam Wisconsin | Eau Claire | WI | United States | July | 3rd Weekend | 3 Days | Country | Music |
| Country Thunder Arizona | Florence | AZ | United States | April | 2nd Weekend | 4 Days | Country | Music |
| Country Thunder Florida | Kissimmee | FL | United States | October | 3rd Weekend | 3 Days | Country | Music |
| Country Thunder Wisconsin | Twin Lakes | WI | United States | July | 3rd Weekend | 4 Days | Country | Music |
| County Bluegrass Festival | Fort Fairfield | ME | United States | July | 3rd Weekend | 3 Days | Bluegrass | Music |
| County Bluegrass Labor Day Festival | Fort Fairfield | ME | United States | September | Labor Day Weekend | 4 Days | Bluegrass | Music |
| County Line Country Fest | Prairie du Chien | WI | United States | August | 1st Weekend | 3 Days | Country | Music |
| Crisfield Bluegrass and Sunset Festival | Crisfield | MD | United States | June | 3rd Weekend | 1 Day | Bluegrass | Music |
| Crook Farm Old-Time Music Festival | Bradford | PA | United States | August | 4th Weekend | 4 Days | Bluegrass | Music |
| Crowe Fest | Clay City | KY | United States | August | 4th Weekend | 3 Days | Bluegrass | Music |
| Cumberland Mountain Fall Festival | Middlesboro | KY | United States | October | 1st Weekend | 2 Days | Country, Americana, Bluegrass, and Local Artists | Music |
| Cumberland River Bluegrass Festival | Burkesville | KY | United States | September | 3rd Weekend | 3 Days | Bluegrass | Music |
| Cyclops Cove | Boca Raton | FL | United States | December | 1st Weekend | 3 Days | Bass, Electronic | Music |
