Frantz Casséus (1915–1993) was a Haitian guitarist and composer.

Although born and raised in Port-au-Prince, Haiti, he spent most of his adult life in the United States. His music maintained a focus on Haitian folk forms, which he incorporated into his recordings and his published compositions. Casséus was a frequent collaborator with Harry Belafonte. He was also an early guitar teacher to the musician Marc Ribot, who has played a significant role in preserving Casséus' musical legacy.[1] As part of these efforts, Ribot edited a collection of Casséus' solo guitar compositions,[2] and performed those same pieces on a CD issued in 1993