Sir Cuthbert Montraville Sebastian (born 1921) is the Governor-General of St. Kitts and Nevis. He studied at Mount Allison University, New Brunswick and became a surgeon. He was Chief Medical Officer of St. Kitts and Nevis from 1980 to 1983. He was appointed Governor-General in 1995 and was sworn in on January 1, 1996.

See also: List of national leaders.