| Business | Phone |
| Academy Of Chimar's Tang Soo 9305 Gerwig Ln, Columbia 21046 | (410) 381-3553 |
| American Academy-Martial Arts 9200 State Route 108 # 100, Columbia 21045 | (410) 964-2262 |
| Jow Ga Kung Fu Athletic Assn 9220 Rumsey Rd # 5, Columbia 21045 | (410) 992-6673 |
| Top Shape Fitness 9520 Gerwig Ln, Columbia 21046 | (410) 964-8449 |
| Wild Lake Karate & Fitness 10451 Twin Rivers Rd # 126, Columbia 21044 | (410) 884-7340 |
| World Champion Gerald Dawson 10735 Little Patuxent Pkwy, Columbia 21044 | (410) 992-1678 |
| Ju-Jitsu Dojo of Columbia 9147 B Red Branch Road, Columbia 21045 | (410) 309-1988 |