| E. E. B. Mackintosh | |
| Birth Date: | 3 November 1880 |
| Allegiance: | United Kingdom |
| Branch: | British Army |
| Serviceyears: | 1899–1933 1939–1940 |
| Rank: | Colonel |
| Servicenumber: | 9228 |
| Unit: | Royal Engineers |
| Commands: | School of Military Engineering, Chatham (1939–40) |
| Battles: | First World War Second World War |
| Awards: | Distinguished Service Order Mentioned in Despatches Legion of Honour (France) |
| Laterwork: | Director of the Science Museum (1933–45) |
Colonel Ernest Elliot Buckland Mackintosh, (3 November 1880 – 25 November 1957)[1] was a British Army officer, engineer, and a Director and Secretary of the Science Museum in London.[2] He was appointed Director and Secretary of the Science Museum following the retirement of Sir Henry Lyons in October 1933,[3] and continued in the role until 30 November 1945.[4]
Mackintosh was educated at Eton College and Royal Military Academy, Woolwich, then commissioned in the Royal Engineers in 1899. During the First World War he was mentioned in despatches and awarded the Distinguished Service Order (DSO) and the French Legion of Honour. After the war he reached the rank of colonel before retiring in 1933. He came out of retirement briefly during the Second World War to be commandant of the School of Military Engineering, Chatham, from 1939 to 1940.[1] [5]