Blake Raymond Pelly OBE (31 May 1907, Buckley, Flintshire - 16 October 1990, Sydney) was an Australian air force officer, politician and businessman, who represented the Liberal Party of Australia in New South Wales Parliament.
Before and during World War II he served in the Royal Australian Air Force, rising to the rank of Group Captain and director of Operations Royal Australian Air Force Headquarters 1945–1946. He was mentioned in despatches on 24 September 1941. On 16 June 1944, Wing Commander Pelly was appointed an Officer of the Order of the British Empire for distinguished service and efficiency in the south-west Pacific area.
He represented the electoral district of Wollondilly from 1950 to 1957.
After retiring he was chairman of directors of Rio Tinto (Australia) Limited, Hammersley Iron Pty Limited, Zinc Corporation Limited, Merchant Bills Corporation; chairman of directors of Unity Life Assurance Limited from 1959, Sun Alliance Insurance Limited from 1972, deputy chairman of Universities Board in 1967, and a member of Higher Education Board in 1976.