| Nathan Hutchison | Creve Coeur | Missouri | Approved | 20890 | Grade 4 Senior (18 and over) | Grade 4 | | | | | | |
| Christopher Ingram | Cincinnati | Ohio | Approved | 26022 | Grade 4 Senior (18 and over) | Grade 4 | | | | | | |
| Isabella Jackson | Cleveland | OH | Approved | 26042 | Grade 4 Senior (18 and over) | Grade 4 | Grade 1 | | | | | |
| Stella Jacoby | Blanchardville | WI | Approved | 20189 | Grade 2 | Grade 2 | | | | | | |
| Scarlett Jacoby | Blanchardville | WI | Approved | 20188 | | | Grade 3 | | | | | |
| Jessica Janis | Warrenville | IL | Approved | 26121 | Practice Chanter Novice (all ages) | | | | | | | |
| Avelyn Janis | Warrenville | IL | Approved | 26123 | Practice Chanter Novice (all ages) | | | | | | | |
| Connor Johnson | Rensselaer | Indiana | Approved | 20922 | Grade 5 Junior (under 18) | | | | | | | |
| Amy Johnson | Loves Park | Il | Approved | 26115 | | | | Beginner | | | | |
| Evan Johnston | Bay Village | Ohio | Approved | 26062 | | | Grade 4 | | | | | |
| Richard Johnston | Saint Louis | Missouri | Approved | 20372 | Grade 5 Senior (18 and over) | Grade 4 | | | | | | |
| Paul Jones | Bloomington | IL | Approved | 20892 | Grade 4 Senior (18 and over) | Grade 4 | | | | | | |
| Kent Kaiser | Saint Paul | MN | Approved | 20046 | Grade 4 Senior (18 and over) | Grade 4 | | | | | | |
| Michelle Kasbohm | Milwaukee | WI | Approved | 25013 | Grade 5 Senior (18 and over) | | | | | | | |
| Michael Kazmierski Dunn | Grand Rapids | MI | Approved | 20071 | Grade 2 | Grade 2 | | | | | | |
| Sheryl Kelley | Depew | New York | Approved | 26070 | | | | | Novice | | | |
| Bradley Kenna | Oklahoma City | Oklahoma | Approved | 20245 | Grade 4 Senior (18 and over) | Grade 4 | | | | | | |
| Andrew Keppel | Batavia | IL | Approved | 20313 | | | Grade 2 | Novice | | | | |
| Michael Keppel | Batavia | IL | Approved | 26061 | | | | | Advanced | | | |
| Joseph Kern | Cleveland | OH | Approved | 25022 | Grade 3 | Grade 4 | | | | | | |
| Jim Kilburg | Hilliard | OH | Approved | 26029 | (none) | (none) | Grade 3 | (none) | (none) | (none) | | |
| Aaron Kimzey | Monmouth | Illinois | Approved | 20059 | Grade 4 Senior (18 and over) | Grade 4 | | | | | | |
| Tanner Kline | Ashville | Ohio | Approved | 26028 | Grade 4 Senior (18 and over) | Grade 4 | | | | | | |
| Matt Kline | Sedalia | MO | Approved | 25014 | Open | Open | | | | | | |
| Evelyn Koeth | Commercial Point | OH | Approved | 26111 | | | Grade 5 | | | | | |
| Michael Kotch | Smithton | Illinois | Approved | 20041 | | | | | | | Register as an Adjudicator | |
| Dan Kulhanek | North Ridgeville | OH | Approved | 26065 | Grade 4 Senior (18 and over) | Grade 4 | | | | | | |
| Clare Kulhanek | North Ridgeville | OH | Approved | 26066 | | | Grade 4 | | | | | |
| Shannon Lamb | Dane | WI | Approved | 20842 | Grade 4 Senior (18 and over) | | | | | | | |
| Russell Lane | Minneapolis | MN | Approved | 20249 | Grade 4 Senior (18 and over) | Grade 4 | | | | | | |
