- Kaepernick, Colin
- Kahne, Kasey
- Kane
- Kanellis, Maria
- Keibler, Stacy
- Kelly Kelly
- Kemp, Matt
- Kenseth, Matt
- Keothavong, Anne
- Kerrigan, Nancy
- Kidd, Jason
- King, Billie Jean
- Kingman, Dave
- Kingston, Kofi
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- Klitschko, Wladimir
- Kluwe, Chris
- Knievel, Evel
- Kobayashi, Takeru
- Konerko, Paul
- Koskie, Corey
- Kotsay, Mark
- Kournikova, Anna
- Krzyzewski, Mike
- Kubiak, Gary
- Kupets, Courtney
- Kvitova, Petra
- Kvitovia, Petra
- Kwan, Michelle
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