| Term | Full Form | Category |
|---|---|---|
| JKO | J. K. Orthomedic, Ltd. | Others |
| JKO | Jacqueline Kennedy Onassis | Others |
| JKO | Japan Karate Do Organization | Others |
| JKO | Japan Karate-do Organization | Others |
| JKO | Jedi Knight Officer | Others |
| JKO | Jedi Knight Outcast | Others |
| JKO | Joint Knowledge Online | Others |
| JKO | Jordan Kinderlehrer Otto | Others |
| JKO | Just Kidding Okay? | Others |
| JKO | Justin Kalk Orchestra | Others |