| Bob Lansdown | |
| Office1: | Secretary of the Department of Urban and Regional Development |
| Term Start1: | 19 December 1972 |
| Term End1: | 22 December 1975 |
| Office2: | Secretary of the Department of Environment, Housing and Community Development |
| Term Start2: | 1 January 1976 |
| Term End2: | 30 November 1978 |
| Office3: | Secretary of the Postal and Telecommunications Department |
| Term Start3: | 10 July 1979 |
| Term End3: | 3 November 1980 |
| Office4: | Secretary of the Department of Communications |
| Term Start4: | 6 November 1980 |
| Term End4: | 1 February 1986 |
| Birth Name: | Robert Broughton Lansdown |
| Birth Date: | 9 May 1921 |
| Birth Place: | East Maitland |
| Nationality: |  Australian |
| Occupation: | Public servant |
| Alma Mater: | University of Sydney |
Robert Broughton Lansdown (9 May 1921 – 6 May 2006) was a senior Australian public servant and policymaker.
Bob Lansdown was born on 9 May 1921 in East Maitland. At the age of 14, he first joined the Australian Public Service, as a post office bicycle messenger in Strathfield.[1]
During World War II, Lansdown joined the Second Australian Imperial Force, serving in the Middle East and New Guinea.[1]
Lansdown first rejoined the Australian Public Service in 1950 as a Private Secretary in the Prime Minister's Department.
In December 1972 Lansdown was appointed Secretary of the Department of Urban and Regional Development and he remained head of the department when it was transitioned to Department of Environment, Housing and Community Development.
Between July 1979 and November 1980, Lansdown served as Secretary of the Postal and Telecommunications Department. He was the inaugural head of the Department of Communications when the Postal and Communications Department was abolished.
In 1986, Lansdown retired from the public service.[2]
Lansdown was made a Commander of the Order of the British Empire for housing, environment and community development in 1977. In 1991 he was made an Officer of the Order of Australia for service to communications.
In 2009, a street in the Canberra suburb of Casey was named Lansdown Crescent in Bob Lansdown's honour.