Raymond Leo Flynn (born July 22, 1939), also known as Ray Flynn, served as Mayor of Boston from 1984 until 1993. He was later appointed United States Ambassador to the Holy See (1993–1997) by President Bill Clinton.

Flynn began his political career as a Democratic member of the Massachusetts House of Representatives from 1971 to 1979, representing the South Boston neighborhood during the turbulent busing crisis of the early 1970s. He later served on the Boston City Council from 1978 to 1984, before successfully running for Mayor of Boston in 1983. He was reelected in 1987 and again in 1991.