Tenis K ile başlayan oyuncular
- KRC Genk U23
- Kylian Collignon
- Klaudija Bubelyte/Lavinia Tanasie
- KSK Lierse Kempenzonen
- KuPS
- KV Mechelen (W)
- Kelty Hearts
- Kocaelispor
- Kamilla Bartone
- Kate Uzhylovska
- Kamilla Bartone/Sandra Samir
- Kristjan Tamm/Niklas Schell
- Kiyan Santino Kasemi/Volodymyr Uzhylovskyi
- Kseniya Zhdanok/Karine Sarkisova
- Kaya Arinc/Melih Anavatan
- Kaitlin Quevedo
- Karola Patricia Bejenaru/Yasmine Mansouri
- KDF Challengers
- KT Challengers
- Khumoyun Sultanov
- Komlavi Loglo
- Kevin Krawietz/Tim Puetz
- Karim Mohamed Maamoun/Mohamed Safwat
- Kaipo Marshall
- Kwok Shun Dasson Chan
- Komlavi Loglo/Thomas Setodji
- Katarina Kuzmova/Sandra Samir
- Kamilla Bartone/Maya Drozd
- Kevin Humpfner
- Kane Bonsach Ganley
- Ketevan Jeladze
- Katarina Kozarov
- Karola Patricia Bejenaru/Ekaterina Shalimova
- Keisuke Saitoh/Taiyo Yamanaka
- Kevin Portmann/Rishiraj Shekhawat
- Kaya Arinc/Berk Ilkel
- Katerina Tsygourova/Nina Vargova
- Kazakstan
- Kisa Yoshioka
- Krittin Koaykul
- Kotistha Modak
- Kamonwan Yodpetch
- Krittin Koaykul/Suphawat Saeoui
- Kasidit Samrej
- Kaylah Mcphee/Ankita Raina
- Kiyan Santino Kasemi
- Kanako Osafune
- Krittin Koaykul/Anapat Timangkul
- Koray Kirci
- Kiyan Santino Kasemi/Minghui Zhang
- Kerry
- Kilkenny
- Kildare
- Kjelsås
- Kolding IF
- KoVe Vantaa Ducks
- Karlsruhe
- Kioene Padova
- Kazhany Lviv
- KyKy Betset
- Kemas Lamipel Santa Croce
- Kevin Holland
- Kamran Hanif
- Kanako Osafune/Ayaka Ozeki
- Kaya Arinc/Koray Kirci
- Karola Patricia Bejenaru/Andre Lukosiute
- Khumoyun Sultanov/Jasza Szajrych
- Karim Mohamed Maamoun/Faris Zakaryia
- Kseniya Yersh
- Karim Mohamed Maamoun/Faris Zakaria
- Karol Filar
- Kayla Harrison
- Khamzat Chimaev
- Kesmat El Tawil
- Konstantine Gogeliya/Aleksandre Metreveli
- Kanan Gasimov
- Karlo Cubelic/Tom Gentzsch
- Klaudija Bubelyte/Iveta Dapkute
- Kesmat El Tawil/Paulina Martynova
- Ketevan Jeladze/Anamaria Kurtsikashvili
- Kuan Yi Lee/Kai I Wang
- Karlo Cubelic
- Kamilla Bartone/Martha Matoula
- Katarina Kozarov/Veronica Miroshnichenko
- Kaia Giribalan
- Kateryna Diatlova
- Karolina Vlckova
- Kaeri Hernandez Mariona
- Kateryna Diatlova/Jizel Matos Sequeira Fernandes
- Karlo Cubelic/Moraing Oscar
- Kasandra Leoni Djekic/Ava Schueller
- Katharina Hobgarski/Polina Leykina
- Kaeri Hernandez Mariona/Kris Alessandro Hernandez Mariona
- Kazma
- Kataja Basket
- Korihait
- KB Stars (W)
- King Szczecin
- KEV
- Karmine Corp Blue