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| Kalevala Kasino kalevalakasino.com | Esports Entertainment Group | MGA | 1 |
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| Kanuuna kanuuna.com | Blixx Gaming Ltd | Estonia | 1 |
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| Kroon Casino krooncasino.com | Betsson AB | — | 1 |
| Kryptosino kryptosino.com | MOONSEEKER SRL | Anjouan | 1 |
| KTO closed kto.bet.br | KTO Group | Brazil SPA (Ministry of Finance) | 1 |
| KukiMuki kukimuki.com | Metaface Limited | Anjouan | 1 |
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