| K. Thomsen, Maria | Klaksvík (FRO) / Faroe Islands WOCO / Faroe Islands WU19 |  Faroe Islands | Midfield |
| Kaagman, Inessa | Netherlands WU17 |  Netherlands | Defender |
| Kabasele, Nathan | Torino (ITA) / Belgium U19 |  Belgium | Forward |
| Kabashi, Elvis | Juventus (ITA) / Albania U19 |  Albania | Midfield |
| Kabha, Marwan | Israel U21 |  Israel | Midfield |
| Kaboré, Charles | Kuban (RUS) |  Burkina Faso | Midfield |
| Kaboul, Younès | Tottenham (ENG) |  France | Defender |
| Kabze, Hasan | Orduspor (TUR) |  Turkey | Forward |
| Kacaniklic, Alexander | Fulham (ENG) / Sweden |  Sweden | Midfield |
| Kačar, Gojko | Hamburg (GER) |  Serbia | Midfield |
| Kace, Ergys | PAOK (GRE) | Albania | Midfield |
| Káčer, Miroslav | Slovakia U17 |  Slovakia | Midfield |
| Kacharava, Nika | Georgia U19 |  Georgia | Forward |
| Kachura, Dmitri | Russia U19 |  Russia | Midfield |
| Kacprzycki, Łukasz | Lechia (POL) / Poland U19 |  Poland | Midfield |
| Kaczmarek, Marcin Zbigniew | Widzew (POL) | Poland | Midfield |
| Kadah, Deniz | Hannover (GER) |  Germany | Forward |
| Kadakov, Dmitri | Dorozhnik (BLR) / Belarus FUT |  Belarus | Forward |
| Kádár, Tamás | Diósgyőr (HUN) / Hungary / Hungary U21 |  Hungary | Defender |
| Kadastu, Anett | Estonia WU17 |  Estonia | Forward |
| Kadinski, Darko | Zelezarec (MKD) |  FYROM | Defender |
| Kadir, Foued | Marseille (FRA) |  Algeria | Midfield |
| Kadir Ari | Beşiktaş (TUR) / Turkey U19 | Turkey | Forward |
| Kadirova, Sabīne | Liepājas (LVA) / Latvia WOCO |  Latvia | Midfield |
| Kadlec, Michal | Leverkusen (GER) / Czech Republic |  Czech Republic | Defender |
| Kadlec, Václav | Czech Republic / Czech Republic U21 | Czech Republic | Forward |
| Kadlec, Andrej | Slovakia U17 | Slovakia | Defender |
| Kadoic, Deni | Switzerland U17 |  Switzerland | Defender |
| Kadori, Sapir | Israel WOCO | Israel | Goalkeeper |
| Kadrić, Iris | Bosnia and Herzegovina WU19 |  Bosnia and Herzegovina | Defender |
| Kadrii, Bashkim | OB (DEN) / Denmark U21 |  Denmark | Midfield |
| Kadu | Porto (POR) |  Angola | Goalkeeper |
| Kadyrov, Khalid | Terek (RUS) | Russia | Forward |
| Kagawa, Shinji | Man. United (ENG) |  Japan | Midfield |
| Kage, Hervé | Gent (BEL) | Belgium | Defender |
| Kah, Mamadou | France FUT | France | Forward |
| Kahan Özcan | Turkey FUT | Turkey | Forward |
| Kahlenberg, Thomas | Wolfsburg (GER) / Denmark | Denmark | Midfield |
| Kahriman, Damir | Tavriya (UKR) / Serbia | Serbia | Goalkeeper |
| Kahvedžić, Nermin | Orlić (BIH) / Bosnia and Herzegovina FUT | Bosnia and Herzegovina | Forward |
| Kainz, Tobias | Sturm (AUT) / Austria U21 |  Austria | Forward |
| Kainz, Florian | Sturm (AUT) / Austria U21 | Austria | Midfield |
| Kaján, Zsanett Bernadett | Hungary WU17 / Hungary WU19 | Hungary | Forward |
| Kajević, Asmir | Zürich (SUI) / Montenegro U21 |  Montenegro | Midfield |
| Kajgård, Tyra | Sweden WU17 | Sweden | Forward |
| Kajtar, Linda | Romania WU17 |  Romania | Goalkeeper |
| Kaká | Real Madrid (ESP) |  Brazil | Midfield |
| Kaká | Deportivo (ESP) | Brazil | Defender |
| Kaká | Azerbaijan FUT |  Azerbaijan | Forward |
| Kakabadze, Murtaz | Georgia FUT | Georgia | Defender |
