Telecommunications
- Alcatel Australia Limted (1912 - )
- Amalgamated Wireless (Australasia) Ltd (AWA) (1913 - 1988)
- AUSSAT Pty Ltd (1979 - 1992)
- Austral Standard Cables Pty Ltd (1948 - 1988)
- Australian and Overseas Telecommunications Corporation (1992 - 1993)
- Australian Broadband Communications Network (1959 - )
- Australian Broadband Network
- Australian Telecommunications and Electronics Research Board (1985 - )
- Australian Telecommunications Commission (1975 - 1989)
- Australian Telecommunications Corporation (1989 - 1992)
- Australian Telecommunications CRC (1999 - )
- Australian Wireless Company (? - 1913)
- Automatic Network and Switching Objectives (ANSO) (1957 - )
- AWA Limited (1988 - )
- Cable and Wireless (C&W)
- Centre for Advanced Technology in Telecommunications (1987 - ), RMIT University
- Centre for Telecommunications and Information Engineering (CTIE) (1993 - ), Monash University
- Commonwealth Cable Management Committee (1960s - )
- CRC for Broadband Telecommunications and Networking (1993 - 1999)
- CRC for Optical Fibre and Photonic Technology ( - 1992)
- CRC for Satellite Systems (1998 - )
- CRC for Sensor Signal and Information Processing (1992 - )
- CRC for Smart Internet Technology (2001 - )
- CSIRO Division of Radiophysics (1940 - 1996), Commonwealth Scientific and Industrial Research Organisation
- CSIRO Division of Telecommunications and Industrial Physics (1996 - ), Commonwealth Scientific and Industrial Research Organisation
- Ericsson Australia (1951 - )
- European Launcher Development Organisation (ELDO) (c. 1960 - c. 1974)
- International Maritime Satellite Organisation (INMARSAT) (1974 - )
- John Holland Group Pty Ltd (1949 - )
- L. M. Ericsson
- Marconi's Wireless Telegraph Co Ltd (1900 - 1913)
- Maritime Wireless (1900s - c. 1914)
- MM Cables Telecommunications (1988 - c. 2000)
- NEC Australia (1969 - )
- Optus (1992 - )
- Optus Networks Pty Ltd
- Overseas Telecommunications Commission (1946 - 1992)
- Pearcey Foundation (1998 - )
- Postmaster-General's Department (1901 - 1975)
- Radio Research Board (1927 - 1985)
- Siemens (Australia) Ltd (1872 - )
- Sperry Rand Australia Limited (? - 1975)
- Standard Telephones and Cables Pty Ltd (1937 - 1970s)
- Telecom Australia International Limited (1970s - )
- Telephone & Electrical Industries (TEI)
- Telephone Manufacturing Company (Australia)
- Telstra Corporation Limited (1993 - )
- Victorian Telegraph Service
Timber Industry
- Australian Tree Seed Centre (1962 - )
Transport
- Acco Transport (1883? - 2002)
- Ansett Freight Express Ltd
- Ansett Transport Industries Ltd
- ARRB Transport Research Ltd (1995 - )
- Australasian Steam Navigation Company (1851 - 1887)
- Australasian United Steam Navigation Company Ltd (1887 - 1960s)
- Australian Airlines (1986 - 1992)
- Australian Motoring Association (1903 - 1924)
- Australian National Airways (1928 - 1930s)
- Australian National Airways (ANA) (1930s - )
- Australian National Line (ANL) Limited (1989 - )
- Australian National Railways Commission (1975 - 1997), Commonwealth of Australia
- Australian Road Research Board (1961 - 1995)
- Australian Shipping Board (1946 - 1961), Commonwealth of Australia
- Australian Shipping Commission (1974 - 1989), Commonwealth of Australia
- Australian Southern Railroad
- Austroads
- Brambles Industries Limited (1954 - )
- Brambles Transport Company
- Bureau of Transport and Communications Economics (1988 - 1998?), Commonwealth of Australia
- Bureau of Transport Economics [I] (1970 - 1977), Commonwealth of Australia
- Bureau of Transport Economics [II] (1977 - 1988), Commonwealth of Australia
- Bureau of Transport Economics [III] (1998? - ), Commonwealth of Australia
- Centre for Packaging, Transportation and Storage (1994 - ), Victoria University
- Commonwealth Bureau of Roads (1965 - 1977), Commonwealth of Australia
- CSIR Food Preservation and Transport Section (1931 - 1940), Council for Scientific and Industrial Research
- CSIRO Division of Food Preservation and Transport (1940 - 1960), Commonwealth Scientific and Industrial Research Organisation
- Department of Aviation (1982 - 1987), Commonwealth of Australia
- Department of Shipping and Transport (1951 - 1972), Commonwealth of Australia
- Department of Transport [III] (1972 - 1982), Commonwealth of Australia
- Department of Transport [IV] (1983 - 1987), Commonwealth of Australia
- Department of Transport [V] (1993 - 1996), Commonwealth of Australia
- Department of Transport and Communications (1987 - 1993), Commonwealth of Australia
- Department of Transport and Construction (1982 - 1983), Commonwealth of Australia
- Department of Transport and Regional Development (1996 - 1998), Commonwealth of Australia
- Department of Transport and Regional Services (1998 - ), Commonwealth of Australia
- Hobart Electric Tramways Company (c. 1884 - )
- Howard Smith Limited (1914 - 2001)
- Humble and Son
- Hunter River Steam Navigation Company (1839 - 1851)
- International Catamarans Pty Ltd (1977 - )
- Kenworth Australia (1962 - )
- Mayne Nickless Limited (1886 - 2002)
- New South Wales Government Tramways, State of New South Wales
- Qantas Airways Limited (1967 - )
- Qantas Empire Airways Limited (1934 - 1967), Commonwealth of Australia
- Queensland and Northern Territory Aerial Services Limited (QANTAS) (1920 - 1947)
- Queensland Steamship Company Ltd (1881 - 1887)
- Randwick Tramway Workshops (1902 - 1960s)
- Thomas Nationwide Transport Limited (1946 - 1986)
- TNT Limited
- Victorian Department of Infrastructure (1996 - ), State of Victoria
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