The famous author known for pushing the boundaries of fiction in "The Sound and the Fury" is William Faulkner. Published in 1929, the novel is renowned for its complex narrative structure, utilizing stream of consciousness to depict the disintegration of the Compson family in the American South. Faulkner's innovative style, multiple perspectives, and deep exploration of themes such as time, memory, and identity have made it a landmark work in American literature. His contributions to literature earned him the Nobel Prize in Literature in 1949, solidifying his status as a seminal figure in Southern writing.