Bartley P. Griffith

Bartley P. Griffith (born 1949) is an American heart surgeon.

Griffith joined Muhammad Mohiuddin's MD Xenoheart laboratory in 2018. Together, they were able to demonstrate that the heart of a genetically altered pig could support life when transplanted into an orthotopic position in the chest for up to 9 months. Griffith and Mohiuddin performed the first successful xenotransplantation of a genetically modified pig heart to a human on January 7, 2022. The recipient was 57-year-old David Bennett Sr. The procedure occurred at the University of Maryland Medical Center. Due to complications, David Bennett Sr died on March 8, 2022.

On September 20, 2023, Bartley P. Griffith performed his second pig heart transplant.