| Agency Name: | Department of External Territories |
| Formed: | 20 February 1968 |
| Preceding1: | Department of Territories (I) |
| Dissolved: | 30 November 1973 |
| Superseding: | Department of Foreign Affairs – for residual responsibilities relating to Papua New Guinea |
| Type: | Department |
| Jurisdiction: | Commonwealth of Australia |
| Minister1 Name: | Charles Barnes |
| Minister1 Pfo: | Minister (1968–1972) |
| Minister2 Name: | Andrew Peacock |
| Minister2 Pfo: | Minister (1972) |
| Minister3 Name: | Gough Whitlam |
| Minister3 Pfo: | Minister (1972) |
| Minister4 Name: | Bill Morrison |
| Minister4 Pfo: | Minister (1972–1973) |
| Chief1 Name: | George Warwick Smith |
| Chief1 Position: | Secretary (1968–1970) |
| Chief2 Name: | David Hay |
| Chief2 Position: | Secretary (1970–1973) |
| Headquarters: | Canberra |
The Department of External Territories was an Australian government department that existed between February 1968 and November 1973. It was the second Australian Government department to be given the name.
The Department of External Territories was established by the Gorton government in 1968, formed from the portions of the old Department of Territories (I) that dealt with Papua New Guinea and Australia's smaller external territories and hiving off the portions of the department that dealt with Northern Territory.[1]
According to the Administrative Arrangements Order made on 20 December 1972, the department dealt with matters related to the Territory of Papua, the Territory of New Guinea, the Territory of Cocos (Keeling) Islands and the Territory of Christmas Island.
The department was an Australian Public Service department, staffed by officials who were responsible to the Minister for External Territories.