The famous playwright known for his use of tragicomedy in his works is Samuel Beckett. Best known for his play "Waiting for Godot," Beckett's writing challenges traditional narratives and explores human existence's absurdities. His unique blend of humor and tragedy reflects the complexities of the human condition, inviting audiences to engage with profound philosophical questions. Beckett’s innovative style has left a lasting influence on theater and literature, marking him as a significant figure in the realm of modern drama.