| IKF | I Knowledge Factory
| Others |
| IKF | Imerys Kiln Furniture
| Others |
| IKF | Imperial Klingon Forces
| Others |
| IKF | Imran Khan Foundation
| Others |
| IKF | Inclusive Karate Federation
| Others |
| IKF | International Karate Federation
| Others |
| IKF | International Kart Federation
| Others |
| IKF | International Karting Federation
| Others |
| IKF | International Kempo Federation
| Others |
| IKF | International Kendo Federation
| Others |
| IKF | International Kickball Federation
| Others |
| IKF | International Kickboxing Federation
| Others |
| IKF | International Kids Fund
| Others |
| IKF | International Korfball Federation
| Others |
| IKF | International Kung Fu
| Others |
| IKF | International Kungfu Federation
| Others |
| IKF | Internationale Kobudo Federation
| Others |