Authors born in 1991
- Isaiah Rashad Rapper, 1991
- Jack Garratt Singer-Songwriter, 1991
- Jacob Dalton Artistic Gymnast, 1991
- James Frecheville Actor, 1991
- James Rodriguez Football Player, 1991
- Jamie Blackley Actor, 1991
- Jamie Lynn Spears Actress, 1991
- Jasmine Murray Singer, 1991
- Jasmine Tookes Model, 1991
- Jason Dolley Actor, 1991
- Jennifer Damiano Actress, 1991
- Jeremy Allen White Actor, 1991
- Jesse Rutherford Singer, 1991
- Jessica Anne Newham Singer, 1991
- Jessica Springsteen Athlete, 1991
- Jesy Nelson Singer, 1991
- Jillian Rose Reed Actress, 1991
- Jimmy Garoppolo American Football Player, 1991
- Joe Alwyn Actor, 1991
- Jordan Pruitt Artist, 1991
- Josh Gordon American Football Player, 1991
- Jung Jin-young Singer, 1991
- Kang Min-hyuk Musician, 1991
- Karol G Singer-Songwriter, 1991
- Kate Stoltzfus Model, 1991
- Kathryn Prescott Actress, 1991
- Kawhi Leonard Athlete, 1991
- Keith Stanfield Actor, 1991
- Kelly Olynyk Basketball Player, 1991
- Kelsey Chow Actress, 1991
- Kevin De Bruyne Football Player, 1991
- Kygo Record Producer, 1991
- Kyle Massey Actor, 1991
- Lauren Daigle Singer, 1991
- Lee Jung-shin Musician, 1991
- Leigh-Anne Pinnock Singer, 1991
- Leland Singer, 1991
- Lindsay Pearce Actress, 1991
- Lodewijk Fluttert Music Producer, 1991
- Louis Tomlinson Singer-Songwriter, 1991