Authors born in 1980
- Kandyse McClure Actress, 1980
- Kao Kalia Yang Writer, 1980
- Karamo Brown Television Presenter, 1980
- Kareem Mortimer Film Maker, 1980
- Kareena Kapoor Khan Actress, 1980
- Karen Thompson Walker Author, 1980
- Karina Longworth Film Critic, 1980
- Kasey Kahne Racing Automobile Driver, 1980
- Kassim Osgood Football Player, 1980
- Kate Kelly Feminist, 1980
- Kate Micucci Actress, 1980
- Katee Sackhoff Actress, 1980
- Katherine Jenkins Singer, 1980
- Katherine Waterston Actress, 1980
- Katie Dippold Screenwriter, 1980
- Katsura Hoshino Mangaka, 1980
- Kelli Giddish Actress, 1980
- Kerry Katona Singer, 1980
- Kevin Pietersen Athlete, 1980
- Kevin Powers Writer, 1980
- Kian Egan Singer-Songwriter, 1980
- Kieran Bew Actor, 1980
- Kim Kardashian Television Presenter, 1980
- Kip Moore Songwriter, 1980
- Koren Zailckas Writer, 1980
- Kristen Bell Actress, 1980
- Kristen Connolly Actress, 1980
- Kurt Vile Singer, 1980
- L. J. Smith American Football Player, 1980
- Lamorne Morris Actor, 1980
- Lane Garrison Actor, 1980
- Lara Pulver Actress, 1980
- Laura Jane Grace Founder, 1980
- Laura Mennell Actress, 1980
- Laura Prepon Television Actor, 1980
- Lauren Lee Smith Actress, 1980
- Lee Hyeon-seo Activist, 1980
- Lela Loren Television Actor, 1980
- Liane Balaban Actress, 1980
- Lin-Manuel Miranda Composer, 1980