The author known for creating the character Katniss Everdeen is Suzanne Collins. She is an American writer best known for her dystopian trilogy, "The Hunger Games," which follows the story of Katniss, a young woman who becomes a symbol of resistance against an oppressive regime in a future society. Collins' writing explores themes of survival, sacrifice, and societal issues, resonating with a global audience. "The Hunger Games" series has gained immense popularity, leading to successful film adaptations and establishing Collins as a significant figure in contemporary young adult literature.