| Honorific-Prefix: | Rear-Admiral Sir |
| Nigel Cecil | |
| Honorific-Suffix: | KBE CB |
| Office: | Lieutenant Governor of the Isle of Man |
| Order: | 23rd |
| Predecessor: | Sir John Paul |
| Successor: | Sir Laurence New |
| Birth Date: | 11 November 1925 |
| Nationality: | British |
| Children: | Robert Barclay Amherst Cecil |
| Alma Mater: | Royal Naval College, Dartmouth |
| Allegiance: |  United Kingdom |
| Branch: | Royal Navy |
| Rank: | Rear Admiral |
| Term Start: | 1 October 1980 |
| Term End: | 25 September 1985 |
| Birthname: | Oswald Nigel Amherst Cecil |
| Education: | Ludgrove School |
Rear-Admiral Sir Oswald Nigel Amherst Cecil, KBE, CB (11 November 1925 – 10 March 2017) was a British naval officer.
Oswald Nigel Amherst Cecil was born 11 November 1925,[1] to Commander Hon. Henry Mitford Amherst Cecil (1893–1963) and Hon. Yvonne Cornwallis (1896–1983). Cecil is a paternal grandson of Lord William Cecil (1854–1943) and the 2nd Baroness Amherst of Hackney (1857–1919) and a maternal grandson of the 1st Baron Cornwallis (1864–1935). He was educated at Ludgrove School and the Royal Naval College, Dartmouth.[1]
In 1959, he reached the rank of Commander. From 1961 - 63, Cecil commanded HMS Corunna in the Mediterranean and then HMS Royal Arthur from 1963 - 65. In 1966, he was promoted to the rank of Captain.
Cecil returned to Dartmouth to command a training squadron from 1969 - 71. In 1968 he was made an Esquire (Esq.St.J. the lowest grade) in the Venerable Order of Saint John.
Cecil received the acting rank of Commodore in 1971 and was sent to South Africa as a Naval attaché to Cape Town until 1973. He was then a director of the Naval Operational Requirements from 1973 - 75. On 7 January 1975, he was appointed a Naval aide-de-camp to The Queen. He left this position on being promoted to Rear Admiral on 7 July 1975. He then became the NATO Commander of the South East Mediterranean and Flag Officer, Malta. In the 1978 New Year Honours, he was made a Companion of the Order of the Bath (CB).
Cecil left the island with the last of the British Forces in 1979 and on, 16 June 1979, was made a Knight Commander of the Order of the British Empire (KBE). He retired from the navy on 15 September 1979.
On 9 September 1980, Cecil became Lieutenant Governor of the Isle of Man, a post he held for five years. Also in 1980, he was promoted to Knight of the Order of Saint John (K.St.J.).
On 6 April 1961, he married Annette Barclay (born 1934), daughter of Major Robert Edward Barclay of Mathers and Urie (1906–1959) and Nesta Anne Bury-Barry (1909–2004). Together they had:[1]
Cecil, who lived with his wife of over fifty-five years, on the Isle of Wight, died on 10 March 2017, at the age of 91.[2]
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