Authors Born on January 21
- Ryan Stevenson Musician, 1979
- Sasha Pivovarova Model, 1985
- Stonewall Jackson Soldier, 1824
- Sushant Singh Rajput Actor, 1986
- Svetlana Khodchenkova Actress, 1983
- Telly Savalas Actor, 1922
- Tyler Cowen Economist, 1962
- Wes Streeting Politician, 1983
- William Edgar Politician, 1858
- William Webb 1887
- Wolfgang Kohler Psychologist, 1887
- Wolfman Jack Disc Jockey, 1938
- Yasunori Mitsuda Composer, 1972