Aerial view from the south-west
|Population||7,133 (2016 census)|
|Elevation||127 m (417 ft)|
|LGA(s)||Shire of Cardinia|
|State electorate(s)||Gembrook, Bass|
|Federal Division(s)||La Trobe|
Officer is suburb of Melbourne, Victoria, Australia, 48 km south-east of Melbourne's Central Business District, located within the Shire of Cardinia local government area. Officer recorded a population of 7,133 at the 2016 Census. Officer serves as the Council seat of the shire.
Most of the land around Officer is currently being developed for residential use with medium density housing. Population and demographic mixes are changing, with construction of a 4,000 lot housing estate to be completed in late 2019. Current estates that have been announced and under construction include: Timbertop,  Arcadia,  Kaduna Park,  Savannah,  Grandvue and  The Rise. 
The suburb is named after the Officer family, who were early settlers in the area. A timber industry was established, and by 1870 timber was being transported from the railways sidings, named Officer's Wood Siding. This was shortened to Officer's and later, Officer.
A brickmaking industry began in the 1880s, but died away after the collapse of the land boom. The population was sufficient to justify a post office, opening on 16 December 1885 (known as Officer's Siding until 1888 and Officer Railway Station until 1913).
On 17 November 2014, the Shire of Cardinia moved from its offices in Pakenham to a new building in Officer, making it the Council seat. The council building is within the planned Officer Town Centre, expected to house new retail and recreational facilities.
In Officer 70.1% of people were born in Australia. The most common ancestries in Officer were English 25.7%, Australian 24.6%, Irish 6.7%, Scottish 5.9% and Indian 4.0%.  The most common countries of birth outside of Australia were England 4.3%, India 4.3%, Sri Lanka 2.9%, New Zealand 1.8% and Philippines 1.0%.  0.6% of people in Pakenham are Aboriginal. The most common responses for religion in Officer (State Suburbs) were No Religion, so described 32.9%, Catholic 24.5%, Anglican 9.4%, Not stated 6.3% and Christian, nfd 4.5%. In Officer (State Suburbs), Christianity was the largest religious group reported overall 53.2%. 
Officer is in the south east growth corridor, with many new schools opening in the past ten years. There are now twelve schools in the area; Berwick Grammar School, Glenvale School, Heritage College, Maranatha Christian School (Officer campus), Minaret Islamic College (Officer campus), Officer Primary School, Officer Secondary College, Officer Specialist School, St Brigid's Catholic Primary School, St Clare's Catholic Primary School, St. Francis Xavier College (Officer Campus) and Bridgewood Primary School are located in Officer.
There are various facilities in officer for recreation. There are two lighted AFL sporting grounds which also support Cricket. There are presently 5 recreational parks for walking and children's playgrounds. Popular also is the Venue "Club Officer" which hosts Family Dining, Sport Bar and pokies facilities.
There are also gymnasium facilities located at Arena Shopping centre.
Currently there the major shopping precinct is Arena Shopping Centre. It has a mix of major retail and some smaller commercial outlets including the Officer Post Office, a Woolworths supermarket, a McDonald's, a KFC and a Subway. As a newly developed area Officer also has access to the Australian NBN service which has much larger capability for increased network performances.
Officer has its own Officer railway station which is located on the Gippsland line, in Victoria, Australia. It serves the south-eastern Melbourne suburb of Officer, and opened on 4 August 1881 as Officer's Siding.
- Shire of Pakenham - Officer was previously within this former local government area.
- Officer railway station
- Officer Development Plan (PDF)
|Wikimedia Commons has media related to Officer, Victoria.|
- Australian Bureau of Statistics (27 June 2017). "Officer (State Suburb)". 2016 Census QuickStats. Retrieved 20 September 2017.
- Kaduna Park
- The Rise
- "S35: Boonwurrung". Australian Institute of Aboriginal and Torres Strait Islander Studies. Federal government. 26 July 2019. Retrieved 6 January 2021.
- Phoenix Auctions History. "Post Office List". Retrieved 1 February 2021.
- "Officer Town Centre". Development Victoria. Retrieved 7 October 2020.
- "Ancestry, top responses". Australian Bureau of Statistics.
- "Country of birth". Australian Bureau of Statistics.
- "Religious affiliation, top responses". Australian Bureau of Statistics.
- "Club Officer". www.clubofficer.com.au. Retrieved 8 February 2017.