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Defence Tech startups in Australia

11 defence Tech startups in Australia have raised money in rounds we track. These are the 11 that have raised the most, $977M between them, with Sydney the most common home.

$977Mraised by these 11
11on our record in all
Sydneymost common home
Gilmour Space Technologiesraised the most
  1. 1Gilmour Space TechnologiesGilmour Space Technologies is a space rocket company that develops low-cost hybrid launch vehicles.

    Gilmour Space Technologies is a space rocket company that develops low-cost hybrid launch vehicles.

    Founded 2012Yatala, Australia$399Mlast round Jan 2026
  2. 2AustalAustal is an Australian shipbuilder and global defence prime contractor which designs, constructs and sustains some of the world’s most advanced commercial and

    Austal is an Australian shipbuilder and global defence prime contractor which designs, constructs and sustains some of the world’s most advanced commercial and

    Founded 1988Henderson, Australia$245Mlast round Oct 2026
  3. 3Advanced NavigationAdvanced Navigation is a leading company in navigation and autonomous systems, based in Sydney, Australia.

    Advanced Navigation is a leading company in navigation and autonomous systems, based in Sydney, Australia.

    Founded 2012Sydney, Australia$167Mlast round Mar 2026
  4. 4KasadaKasada protects online, mobile, and API channels from system takeover, content scraping, DOS, and account takeover.

    Kasada protects online, mobile, and API channels from system takeover, content scraping, DOS, and account takeover.

    Founded 2015Sydney, Australia$47Mlast round Feb 2026
  5. 5Hypersonix Launch SystemsHypersonix Launch Systems is an Australian aerospace engineering company based in Carole Park, Queensland, founded in 2019 by Dr.

    Hypersonix Launch Systems is an Australian aerospace engineering company based in Carole Park, Queensland, founded in 2019 by Dr.

    Founded 2019Carole Park, Australia$46Mlast round Nov 2025
  6. 6ArkeusArkeus is a defense technology company based in Port Melbourne, Victoria, Australia, founded in 2020 by Simon Olsen and Jon Nebauer.

    Arkeus is a defense technology company based in Port Melbourne, Victoria, Australia, founded in 2020 by Simon Olsen and Jon Nebauer.

    Founded 2020Melbourne, Australia$27Mlast round May 2026
  7. 7HEO RoboticsFounded -Australia$25Mlast round Sept 2026
  8. 8BreakerFounded -Australia$11Mlast round Feb 2026
  9. 9DeteQtDeteqt is a Sydney-based startup focused on quantum sensing, founded in 2023 as a spinout from the University of Sydney’s Nano Institute.

    Deteqt is a Sydney-based startup focused on quantum sensing, founded in 2023 as a spinout from the University of Sydney’s Nano Institute.

    Founded 2023Sydney, Australia$5.8Mlast round Apr 2026
  10. 10QuantX LabsQuantX Labs is an Australian deep-tech company founded in 2016 and based in Adelaide.

    QuantX Labs is an Australian deep-tech company founded in 2016 and based in Adelaide.

    Founded 2016Adelaide, Australia$5.0Mlast round Jun 2026
  11. 11SeitecSeitec is a Canberra-based Australian defense technology startup founded in 2021 by CEO Daniel Stevens.

    Seitec is a Canberra-based Australian defense technology startup founded in 2021 by CEO Daniel Stevens.

    Founded 2021Canberra, Australia$600Klast round Aug 2022
Total fundinghow the list is ranked
15 November 2026updated nightly
Rounds we tracksource: Millionrounds

Companies whose funding rounds we classed in this sector, ranked by the total they have raised in rounds we hold. Nobody pays to be on a list.

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