Field Marshal Sir Thomas Albert Blamey, GBE, KCB, CMG, DSO, ED (24 January 1884 – 27 May 1951) was an Australian general of the First and Second World Wars, and the only Australian ever to attain the rank of field marshal.

Blamey joined the Australian Army as a regular soldier in 1906, and attended the Staff College at Quetta. During the First World War he participated in the landing at Anzac Cove on 25 April 1915, and served as a staff officer in the Gallipoli Campaign, where he was mentioned in despatches for a daring raid behind enemy lines. He later served on the Western Front, where he distinguished himself in the planning for the Battle of Pozières. He rose to the rank of brigadier general, and served as chief of staff of the Australian Corps under Lieutenant General Sir John Monash, who credited him as a factor in the Corps' success in the Battle of Hamel, the Battle of Amiens and the Battle of the Hindenburg Line.

After the war Blamey was Deputy Chief of the General Staff, and was involved in the creation of the Royal Australian Air Force. He resigned from the regular Army in 1925 to become Chief Commissioner of the Victoria Police, but remained in the Militia, rising to command the 3rd Division in 1931. As Chief Commissioner, Blamey set about dealing with the grievances that had led to the 1923 Victorian Police strike, and implemented innovations such as police dogs and equipping vehicles with radios. His tenure as Chief Commissioner was marred by a scandal in which his police badge was found in a brothel, and a later attempt to cover up the shooting of a police officer led to his forced resignation in 1936. He later made weekly broadcasts on international affairs on Melbourne radio station 3UZ. Appointed chairman of the Commonwealth Government's Manpower Committee and Controller General of Recruiting in 1938, he headed a successful recruiting campaign which doubled the size of the part-time volunteer Militia.