Colonel Sir Oliver Crosthwaite-Eyre (14 October 1913 – 3 February 1978) was a British Conservative Party politician.
The elder son of Major John Symons Crosthwaite (later Crosthwaite-Eyre) of Glaschville, Knoydart, Inverness-shire by his wife Dorothy Muriel, the daughter and heiress of George Edward Briscoe Eyre, of Warrens House, Wiltshire, he was granted his maternal grandfather's estate by his mother in 1947.
Educated at Downside School and Trinity College, Cambridge, he attained the rank of Colonel in the Royal Marines in 1945, following which he embarked upon a political career.
Following a longstanding family tradition, Sir Oliver spent much of his time involving himself with the New Forest.
This article about a Conservative Member of the Parliament of the United Kingdom representing an English constituency and born in the 1910s is a stub.