Authors born in 1981
- Kari Jobe Singer, 1981
- Karla Cheatham Mosley Actress, 1981
- Kate Jenkinson Actress, 1981
- Kate Quinn Author, 1981
- Katharine Isabelle Actress, 1981
- Katie Cleary Model, 1981
- Kato Disc Jockey, 1981
- Katori Hall Playwright, 1981
- Katy Mixon Actress, 1981
- Kele Okereke Musician, 1981
- Kelly McCreary Actress, 1981
- Kelly Rowland Singer, 1981
- Kevin Codfert Keyboardist, 1981
- Keyshia Cole Singer, 1981
- Kimberley Walsh Singer, 1981
- Kou Shibasaki Actress, 1981
- Krysten Ritter Actress, 1981
- Kunal Nayyar Actor, 1981
- Lacey Mosley Singer, 1981
- Lady Margaret Sackville Poet, 1981
- Lance Gross Actor, 1981
- Langhorne Slim Musician, 1981
- Larisa Oleynik Television Actor, 1981
- LaTavia Roberson Singer-Songwriter, 1981
- Laura Bailey Actress, 1981
- Laura Bell Bundy Singer, 1981
- Laura Pergolizzi Singer-Songwriter, 1981
- Lauren Kate Author, 1981
- Lee Norris Actor, 1981
- Leila Slimani Writer, 1981
- Leslie Odom, Jr. Actor, 1981
- LeToya Luckett Singer, 1981
- Lily Koppel Writer, 1981
- Lisa Hannigan Singer, 1981
- Liz McClarnon Singer, 1981
- Liza Lapira Actress, 1981
- Lleyton Hewitt Tennis Player, 1981
- Luciano Pereyra Musician, 1981
- Luke Ford Actor, 1981
- Lydia Leonard Stage Actor, 1981