Donald Hope Laidlaw was a lawyer, businessman and politician in the State of South Australia.LL.B., B.Litt.(Oxon) (6 August 1923 – 14 April 2009)
He was born to Mr. and Mrs. Lyndley Hope Laidlaw of Victoria Avenue, Unley Park, and educated at St. Peter's College, then studied Law and Literature at Adelaide University and Magdalen College, Oxford. He was called to the Bar in 1948.
During World War II he served in the AIF. Intelligence Corps as a Japanese interpreter.
He was a member of the Royal Adelaide Golf Club, The Royal and Ancient Golf Club of St Andrews and served on the boards of numerous boards, including Adelaide Brighton Cement, Quarry Industries, Adelaide Wallaroo Fertilizers, Bennett and Fisher and Johns Perry Ltd.
He married (Audrey) Vivienne Perry LLB (29 July 1925 – ), a daughter of Frank Tennyson Perry, on 2 February 1948. Their eldest daughter Diana Laidlaw was a noted State politician. He married again, to Vivienne's sister Margaret Pauline.
- "Former Member of the Parliament of South Australia". Retrieved 12 December 2014.
- Barnier, Cheryl (ed.) Notable Australians Paul Hamlyn Pty Ltd. Sydney 1978 ISBN 0 86832 0129
- "Students admitted to SA Bar". The News. Adelaide: National Library of Australia. 20 December 1948. p. 12. Retrieved 14 December 2014. In the accompanying photograph, Don Laidlaw is next to Don Dunstan.
- "LAIDLAW, Donald Hope". honours.pmc.gov.au. Retrieved 30 October 2018.