Authors born in 1989
- Joseph David-Jones Actor, 1989
- Julian Perretta Singer-Songwriter, 1989
- Jung Yong-hwa Musician, 1989
- K Hari Kumar Novelist, 1989
- Kang Dae-sung Singer, 1989
- Kat Graham Television Actor, 1989
- Katerina Graham Actress, 1989
- Katherine Schwarzenegger Author, 1989
- Katherine Webb Model, 1989
- Kathleen Anne Brien Singer, 1989
- Katie Davis Author, 1989
- Katie Hoff Swimmer, 1989
- Katy B Singer, 1989
- Keegan Allen Actor, 1989
- Kei Nishikori Tennis Player, 1989
- Kelly Marie Tran Actress, 1989
- Ken Baumann Writer, 1989
- Khleo Actor, 1989
- Kiesa Rae Ellestad Singer, 1989
- Kimiko Glenn Actress, 1989
- Kohei Uchimura Gymnast, 1989
- Kylie Bunbury Actress, 1989
- Labrinth Author, 1989
- Lavrenti Lopes Actor, 1989
- Lee Jong-suk Actor, 1989
- Leon Bridges Singer, 1989
- Lianne La Havas Singer, 1989
- Lil' Romeo Rapper, 1989
- Lily Collins Actress, 1989
- Lily James Actress, 1989
- Lindsey Shaw Actress, 1989
- Logan Browning Actress, 1989
- Logan Henderson Actor, 1989
- Lorenza Izzo Actress, 1989
- Lucien Smith Painter, 1989
- Lucy Hale Actress, 1989
- Luke Bracey Actor, 1989
- Mackenzie Rosman Actor, 1989
- Madame Gandhi Music Producer, 1989
- Mallory Jansen Model, 1989