List of Famous people who died at 66

Henry Earle Vaughan, better known as H. Earle Vaughan, was an American telephony engineer, responsible for system and software design for Bell Laboratories' Electronic Switching System No. 1 ESS, and for planning and development of No. 4 Electronic Switching System for long-distance telephony.

Wakanami Jun was a sumo wrestler from Iwai, Ibaraki, Japan. His highest rank was komusubi. He won a top division tournament championship in March 1968. He was also a sumo coach.

Joseph Bradshaw Godber, Baron Godber of Willington, was a British Conservative Party politician and cabinet minister.

Princess Hiyam (1933–1999) was the Iraqi Crown Princess through marriage to Crown Prince 'Abd al-Ilah. She was the aunt by marriage to King Faisal II of Iraq. She survived the massacre of the royal family during the 14 July Revolution.

Pinchas Kehati was a Polish-Israeli rabbi, teacher, and author. He is best known as the author of Mishnayot Mevoarot which is a commentary and elucidation on the entire Mishnah written in Modern Hebrew.

Horácio da Silva Roque was a Portuguese financier and businessman, who founded the Banco Internacional do Funchal (BANIF) in 1988.

Nobuo Yoneda was a Japanese mathematician and computer scientist.

Pa Tepaeru Terito Ariki, Lady Davis was Pa Ariki, one of the two ariki titles of the Takitumu tribe on the island of Rarotonga of the Cook Islands from 1924 until 1990.