Guy Cuthbert Dawnay (26 July 1848 – 28 February 1889) was a Conservative politician.
Dawnay fought at the Battle of Gingindlovu (1879) as a volunteer and also in Egypt in 1882 and at Suakin (in Transport Dept.)
He entered Parliament for the North Riding of Yorkshire at a by-election in 1882, a seat he held until the 1885 election, when he was defeated for the new Cleveland constituency.
He served in the Conservative administration of Lord Salisbury as Surveyor-General of the Ordnance from 1885 to 1886.
[1] Copies of his private journals from 1872 to 1874 are held by Campbell Collections at the University of KwaZulu-Natal.