| Agency Name: | Department of Home Affairs |
| Formed: | 1 January 1901 |
| Dissolved: | 14 November 1916 |
| Superseding: | Department of Works and Railways – for public works, railways, rivers Department of Home and Territories – for all other functions |
| Type: | Department |
| Jurisdiction: | Commonwealth of Australia |
| Minister1 Name: | William Lyne |
| Minister1 Pfo: | Minister (1901–1903) |
| Minister2 Name: | John Forrest |
| Minister2 Pfo: | Minister (1903–1904) |
| Minister3 Name: | Lee Batchelor |
| Minister3 Pfo: | Minister (1904) |
| Minister4 Name: | Dugald Thomson |
| Minister4 Pfo: | Minister (1904–1905) |
| Minister5 Name: | Littleton Groom |
| Minister5 Pfo: | Minister (1905–1906) |
| Minister6 Name: | Thomas Ewing |
| Minister6 Pfo: | Minister (1906–1907) |
| Minister7 Name: | John Keating |
| Minister7 Pfo: | Minister (1907–1908) |
| Minister8 Name: | Hugh Mahon |
| Minister8 Pfo: | Minister (1908–1909) |
| Chief1 Name: | David Miller |
| Chief1 Position: | Secretary |
| Headquarters: | Melbourne |
The Department of Home Affairs was an Australian government department that existed between 1901 and 1916. It was one of seven inaugural government departments of Australia established at federation.
Information about the department's functions and government funding allocation could be found in the Administrative Arrangements Orders, the annual Portfolio Budget Statements and in the Department's annual reports.
At its creation, the Department dealt with:
The Department was an Australian Public Service department, staffed by officials who were responsible to the Minister for Home Affairs.