| Honorific Prefix: | Sir |
| John Osbaldiston Field | |
| Order: | Resident Commissioner then Governor of the Gilbert and Ellice Islands |
| Term Start: | 9 January 1970 |
| Term End: | April 1973 |
| Predecessor: | Val Andersen |
| Successor: | John Hilary Smith |
| Birth Date: | 1913 10, df=y |
| Birth Place: | Southsea, Hampshire, England |
| Nationality: | British |
| Occupation: | Colonial Service |
Sir John Osbaldiston Field (30 October 1913 – 22 February 1985) was a British colonial administrator who was the last Resident Commissioner of the Gilbert and Ellice Islands from 9 January 1970 and then, from 1 January 1972, the first Governor of this Crown Colony.
Field was one of three children of Frank Osbaldiston Field of Gosport, Hampshire and Gertrude Caroline Perrin of Natal, South Africa. He was educated at Stellenbosch Boys School in South Africa and Magdalene College, Cambridge.[1]
From 1963 to 1969, he also was the British Governor of Saint Helena. He was before the Commissioner of the British Cameroons (United Nations trust territory) before incorporation.
Field died on 22 February 1985, at the age of 71.[2]