| Honorific-Prefix: | Dr |
| John Farrands | |
| Office1: | Secretary of the Department of Science |
| Term Start1: | 7 October 1977 |
| Term End1: | 30 November 1978 |
| Office2: | Secretary of the Department of Science and the Environment |
| Term Start2: | 5 December 1978 |
| Term End2: | 3 November 1980 |
| Office3: | Secretary of the Department of Science and Technology |
| Term Start3: | 3 November 1980 |
| Term End3: | 24 December 1981 |
| Birth Name: | John Laws Farrands |
| Birth Date: | 11 March 1921 |
| Birth Place: | Melbourne, Victoria |
| Death Place: | Melbourne, Victoria |
| Occupation: | Public servant, Scientist |
| Nationality: |  Australian |
| Alma Mater: | University of Melbourne University of London Imperial College London |
Dr John Law Farrands (11 March 1921 – 14 July 1996) was a scientist and senior Australian Public Servant.
John Farrands was born on 11 March 1921 in Melbourne. He studied part-time at University of Melbourne for his Bachelor of Science, majoring in physics and mathematics.[1]
Farrands was the Chief Defence Scientist and he was Secretary of the Australian Government science department between 1977 and 1981.
Farrands retired from the Australian Public Service on Christmas Eve 1981.[2]
Farrands died in Melbourne on 14 July 1996.
Farrands was made a Companion of the Order of the Bath in December 1981 when he was Secretary of the Department of Science.[3] In June 1990 Farrands was made an Officer of the Order of Australia in recognition of service to science and technology.[4]