Terence John O'Brien, CMG, MC (13 October 1921 in Ranchi, India – 22 December 2006 in Wallingford, Oxfordshire, England) was a British career diplomat.
[1][2] Born in India, the son of Joseph O'Brien, he belonged to a long line of British civil servants who served the Indian Empire.
He served as a captain in the Ayrshire Yeomanry and took part in the Normandy Landings, being awarded the Military Cross in 1945 for his survey work between Allied and enemy lines.
He visited remote regions to assess British aid projects, and on one occasion trekked with the Crown Prince Birendra, a close friend.
He was posted as ambassador to Burma in 1974 and was appalled by the regime of General Ne Win, whom he was obliged to meet officially on many occasions.