Sir Bernard James Callinan, AC, CBE, DSO, MC (2 February 1913 – 20 July 1995) was an Australian soldier, civil engineer, businessman, and sport administrator.

[2] In March 1941, he volunteered for overseas service and joined the Second Australian Imperial Force, taking up a posting as an instructor at the Demolitions Wing, at the 7th Infantry Training Centre.

[2] Upon returning to Australia, his promotion to major was confirmed and he served on the headquarters of the First Army as a staff officer before taking up a posting as second-in-command of the 31st/51st Battalion at Merauke in November 1943.

[2] Returning to GHD from service in World War 2, Callinan developed the practice in Victoria and Tasmania, creating a vibrant and enthusiastic team with a reputation for efficiency and integrity.

[1] Callinan held many positions in the commercial field, including director of CSR Ltd, director of British Petroleum Company of Australia, chairman of the new Federal Parliament House Construction Authority, commissioner of the Australian Broadcasting Corporation and the State Electricity Commission of Victoria (SEC), deputy chancellor of La Trobe University and president of the Institute of Engineers Australia.