John "Nicolas" Coldstream, FBA, FSA (30 March 1927 – 21 March 2008) was an archaeologist and academic specialising in the Ancient Greek pottery of the Geometric Period. He lectured at Bedford College, rising to become Professor of Aegean Archaeology, and then lectured at University College London as Yates Professor of Classical Art and Archaeology. His best known excavation sites are Kythera and Knossos.
Coldstream was born on 30 March 1927 in Lahore, British Raj. Sir John Coldstream, his father, was serving in the British colony as a High Court Judge. He was educated at the preparatory school St Cyprian's School, Eastbourne and the all-boys public school Eton College, Eton, Berkshire.
Following school, he undertook national service in the British Army. On 26 January 1946, he was commissioned into The Buffs as a second lieutenant. He was given the service number 362272. He saw active service in Egypt and Palestine. He then read classics at King's College, Cambridge, University of Cambridge. He graduated with a double first Bachelor of Arts (BA) degree in 1951.