List of Famous people who died at 66

Alois De Hertog was a Belgian racing cyclist. He won the 1953 edition of the Liège–Bastogne–Liège.

Hermann Paul Müller was a German sidecar, motorcycle, and race car driver.

Frederick Albert Travalena III was a U.S. entertainer, specializing in comedy and impressions.

Terence Joseph Nation was a Welsh screenwriter and novelist. Especially known for his work in British television science fiction, he created the Daleks and Davros for Doctor Who, as well as the series Survivors and Blake's 7.

Bruce Cowling was a film and television actor in the 1940s and 1950s.

Tomás Séamus Cardinal Ó Fiaich KGCHS was an Irish prelate of the Roman Catholic Church. He served as the Catholic Primate of All Ireland and Archbishop of Armagh from 1977 until his death. He was created a Cardinal in 1979. He was born in 1923 in Cullyhanna, and raised in Camlough, County Armagh.

Johannes Krahn was a German architect and an academic teacher.