| A Big Beautiful Block Party | Las Vegas | NV | United States | September | Pop |
| Abingdon Fiddlers’ Convention | Abingdon | VA | United States | June | Bluegrass |
| Adirondack Bluegrass League Annual Roundup | Galway | NY | United States | May | Bluegrass |
| Adirondack Independence Music Festival | Lake George | NY | United States | August | Jam |
| AFLO Music Festival | Purcellville | VA | United States | May | Bluegrass |
| Aiken Bluegrass Festival | Aiken | SC | United States | September | Bluegrass |
| Alaska Folk Festival | Juneau | AK | United States | April | Folk, with elements of Americana, singer-songwriter, and roots music. |
| All Things Go Festival | Columbia | MD | United States | September | Indie, Pop, Rock |
| Altus Grape Fest | Altus | AR | United States | July | Variety, Country, Rock, Blues |
| American Mule and Music Festival | Shelbyville | TN | United States | September | Bluegrass |
| American Music Festival | Berwyn | IL | United States | July | Country, Americana |
| American Roots Music Festival | Guilford | CT | United States | September | American roots music, including folk, bluegrass, blues, and Americana |
| American Roots Music Festival at Caramoor | Caramoor | NY | United States | July | Focuses on American Roots music, encompassing Americana, folk, blues, and bluegrass. Features a mix of established and up-and-coming singer-songwriter artists. |
| American Roots Music Festival at Caramoor (NY) | Katonah | DE | United States | June | American roots music, including bluegrass, folk, blues, and Americana |
| Americana Bean Jamboree | Bean Blossom | IN | United States | June | Bluegrass |
| AmericanaFest | Nashville | TN | United States | September | Americana, roots, singer-songwriter, with a wide range of subgenres and artists |
| Anchorage Folk Festival | Anchorage | AK | United States | January | Folk, including Americana and singer-songwriter elements. |
| Angola Balloons Aloft | Angola | IN | United States | July | Variety, Country, Rock, Blues |
| Ankeny Summerfest | Ankeny | IA | United States | July | Variety, Country, Rock, Blues |
| Annapolis Baygrass Music Festival | Annapolis | MD | United States | September | Progressive bluegrass, jamgrass, and Americana |
| Annapolis Songwriters Festival | Annapolis | MD | United States | September | Americana, Bluegrass, Country, Folk, Indie, Rock |
| Annual Sioux River Folk Festival | Canton | SD | United States | August | Folk, with potential inclusion of Americana, roots, and singer-songwriter artists. |
| Antlers and Acorns Boone Songwriter Festival | Boone | NC | United States | September | Singer-songwriter, Americana, folk, and roots music |
| Appalachian Fiddle & Bluegrass Association Festival | Wind Gap | PA | United States | August | Bluegrass |
| Appalachian Folk Festival | Pisgah Forest | NC | United States | June | Appalachian Folk Music, Bluegrass, Old-Time Music, Mountain Music, Cajun Music, Celtic Music |
| Appalachian State Old-Time Fiddler’s Convention | Boone | NC | United States | February | Fiddle Music |
| Appaloosa Music Festival | Front Royal | VA | United States | August | Bluegrass |
| Arizona Songwriters Gathering | Glendale | AZ | United States | January | Singer-songwriter, Americana, folk, and roots music |
| Armuchee Memorial Day Bluegrass Festival | Armuchee | GA | United States | May | Bluegrass |
| Art at the Glen | Glenview | IL | United States | July | Jazz, Blues, Classical |
| Art For All | Menominee | MI | United States | June | Folk Music, Blues, Rock |
| Art of the Que | Spencer | IA | United States | September | Variety, Country, Rock, Blues |
| Art of Wine Festival | Fayetteville | AR | United States | July | Acoustic Music, Jazz, Blues |
| Art on the Beach | Lakeview | OH | United States | June | Rock, Pop, Country |
| Artie Fest | Martinsville | IN | United States | June | Rock, Pop, Country |
| Ashe County Bluegrass and Old Time Fiddlers Convention | Jefferson | NC | United States | July | Bluegrass |
| Ashley For The Arts | Arcadia | WI | United States | August | Country, Pop, Rock |
| Astral Valley Solar Strings | French Village | MO | United States | June | Bluegrass |
| Atlanta African Dance and Drum Festival | Atlanta | GA | United States | July | Afrobeat, Highlife, Kwaito, Bongo Flava, Maqam |
| Augusta Heritage Center Bluegrass & Vocal Week | Elkins | WV | United States | July | Variety |
| Austin City Limits | Austin | TX | United States | October | Bluegrass, Electronic, Alternative, Hip Hop, Indie, Rock |
