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- Antonie Kamerling, Dutch actor
- Sarah Kane, British playwright
- Hamid Karzai, Afghan President
- Charlie Kaufman, American screenwriter
- Susanna Kaysen, American writer
- John Keats, British poet
- Marian Keyes, Irish writer
- Kool Keith, American hip hop artist
- Alicia Keys, American singer-songwriter
- Ernst Ludwig Kirchner, German painter
- John Kirwan, New Zealand rugby player, former All Black, currently coach of Japan national rugby team.
- Beyoncé Knowles, American singer-songwriter
- Joey Kramer, American musician (Aerosmith)
- Akira Kurosawa, Japanese film director
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