Sir John Dixon Iklé Boyd KCMG (17 January 1936 – 18 October 2019) was a British ambassador and academic administrator.

He was British ambassador to Japan from 1992 to 1996, and subsequently the Master of Churchill College, Cambridge from 1996 to 2006.

[1] He attended Clare College, Cambridge, where he initially read medicine before moving to modern languages.

At home he served as Deputy Under-Secretary for Defence and subsequently Chief Clerk of the FCO before his posting to Japan.

His tenure in Tokyo saw a marked expansion in bilateral exchanges on a wide front.