Lillehei (died 1 April 1981) was an American transplant surgeon best remembered for the world's first successful simultaneous pancreas-kidney transplant in 1966 (sometimes quoted as 1967) and the first known human intestinal transplantation.
He came from a renowned medical family in Minneapolis; his father was a dentist and his brothers were cardiologist James Lillehei and cardiothoracic surgeon C.
Walton Lillehei.
The Lillehei Surgical Society is named in honour of the three brothers.