| Rosa Kafaji | c | SVE | 2024/25 | 1 | 0 | Arsenal | | | |
| Elli Noora Kainulainen | c | FIN | 2025/26 | 0 | 0 | Napoli | | | |
| Kaiser | c | SVI | 2021/22 | 0 | 0 | Servette | | | |
| Nina Kajzba | a | SLO | 2023/24 | 1 | 0 | Napoli, Parma | | | |
| Zsanett Kaján | c | UNG | 2022/23 | 9 | 1 | Fiorentina, Como, Lazio, Parma | | | |
| Ewelina Kamczyk | c | POL | 2025/26 | 1 | 0 | Milan | | | |
| Maia Kamper Rodrigues | a | GER | 2024/25 | 0 | 0 | Sampdoria | | | |
| Sakina Karchaoui | d | FRA | 2020/21 | 2 | 0 | Olympique Lyonnais, Paris Saint-Germain | | | |
| Ghoutia Karchouni | c | FRA | 2021/22 | 12 | 1 | Inter | | | |
| Nikola Karczewska | a | POL | 2024/25 | 6 | 1 | Milan, Lazio | | | |
| Julia Karlenäs | c | SVE | 2023/24 | 4 | 0 | Como | | | |
| Julia Karlernäs | c | SVE | 2022/23 | 1 | 0 | Como | | | |
| Kamilla Karlsen | c | DAN | 2018/19 | 2 | 0 | Brøndby IF | | | |
| Kerttu Karresmaa | p | FIN | 2023/24 | 4 | -10 | Sampdoria, Lazio | | | |
| Vivian Kaspar | p | SVI | 2022/23 | 0 | 0 | Zürich | | | |
| Julia Kassen | p | GER | 2021/22 | 0 | 0 | Wolfsburg | | | |
| Kathellen Sousa | d | BRA | 2020/21 | 5 | 0 | Inter | | | |
| Mizuho Kato | d | GIA | 2019/20 | 1 | 0 | Tavagnacco | | | |
| Marie-Antoinette Katoto | a | FRA | 2019/20 | 3 | 1 | Paris Saint-Germain, Olympique Lyonnais | | | |
| Ines Kbida | c | MAR | 2024/25 | 0 | 0 | Olympique Marseille | | | |
| Milicia Keijzer | d | OLA | 2025/26 | 2 | 0 | Milan | | | |
| Fanny Keizer | p | SVI | 2020/21 | 1 | -3 | Servette, Hellas Verona | | | |
| Maegan Kelly | c | USA - CAN | 2018/19 | 2 | 0 | Atalanta Mozzanica, Florentia | | | |
| Frederike Kempe | d | GER | 2025/26 | 0 | 0 | Borussia Dortmund | | | |
| Samantha Kerr | a | AUS | 2021/22 | 2 | 0 | Chelsea | | | |
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