# Top 11 Defence Tech Startups in Australia by Funding (2026)

> The 11 best-funded defence Tech startups in Australia, ranked by total funding raised: $977M combined.

Source: https://millionrounds.com/top-lists/defensetech-startups-australia (Millionrounds; every figure on the page links to its filing or article)

- 1 [**Gilmour Space Technologies** Gilmour Space Technologies is a space rocket company that develops low-cost hybrid launch vehicles.](https://millionrounds.com/company/gilmour-space-technologies) Gilmour Space Technologies is a space rocket company that develops low-cost hybrid launch vehicles. *Founded* 2012 Yatala, Australia **$399M** last round Jan 2026
- 2 [**Austal** Austal is an Australian shipbuilder and global defence prime contractor which designs, constructs and sustains some of the world’s most advanced commercial and](https://millionrounds.com/company/austal) 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* 1988 Henderson, Australia **$245M** last round Oct 2026
- 3 [**Advanced Navigation** Advanced Navigation is a leading company in navigation and autonomous systems, based in Sydney, Australia.](https://millionrounds.com/company/advanced-navigation) Advanced Navigation is a leading company in navigation and autonomous systems, based in Sydney, Australia. *Founded* 2012 Sydney, Australia **$167M** last round Mar 2026
- 4 [**Kasada** Kasada protects online, mobile, and API channels from system takeover, content scraping, DOS, and account takeover.](https://millionrounds.com/company/kasada) Kasada protects online, mobile, and API channels from system takeover, content scraping, DOS, and account takeover. *Founded* 2015 Sydney, Australia **$47M** last round Feb 2026
- 5 [**Hypersonix Launch Systems** Hypersonix Launch Systems is an Australian aerospace engineering company based in Carole Park, Queensland, founded in 2019 by Dr.](https://millionrounds.com/company/hypersonix-launch-systems) Hypersonix Launch Systems is an Australian aerospace engineering company based in Carole Park, Queensland, founded in 2019 by Dr. *Founded* 2019 Carole Park, Australia **$46M** last round Nov 2025
- 6 [**Arkeus** Arkeus is a defense technology company based in Port Melbourne, Victoria, Australia, founded in 2020 by Simon Olsen and Jon Nebauer.](https://millionrounds.com/company/arkeus) Arkeus is a defense technology company based in Port Melbourne, Victoria, Australia, founded in 2020 by Simon Olsen and Jon Nebauer. *Founded* 2020 Melbourne, Australia **$27M** last round May 2026
- 7 [**HEO Robotics**](https://millionrounds.com/company/heo-robotics) *Founded* - Australia **$25M** last round Sept 2026
- 8 [**Breaker**](https://millionrounds.com/company/breaker) *Founded* - Australia **$11M** last round Feb 2026
- 9 [**DeteQt** Deteqt is a Sydney-based startup focused on quantum sensing, founded in 2023 as a spinout from the University of Sydney’s Nano Institute.](https://millionrounds.com/company/deteqt) 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* 2023 Sydney, Australia **$5.8M** last round Apr 2026
- 10 [**QuantX Labs** QuantX Labs is an Australian deep-tech company founded in 2016 and based in Adelaide.](https://millionrounds.com/company/quantx-labs) QuantX Labs is an Australian deep-tech company founded in 2016 and based in Adelaide. *Founded* 2016 Adelaide, Australia **$5.0M** last round Jun 2026
- 11 [**Seitec** Seitec is a Canberra-based Australian defense technology startup founded in 2021 by CEO Daniel Stevens.](https://millionrounds.com/company/seitec) Seitec is a Canberra-based Australian defense technology startup founded in 2021 by CEO Daniel Stevens. *Founded* 2021 Canberra, Australia **$600K** last round Aug 2022

**Total funding** how the list is ranked

**15 November 2026** updated nightly

**Rounds we track** source: 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.

## Who backed them?

Open any company for its rounds and investors, or search the investors who back defence Tech startups in Australia in the app, with filters, lists and exports.

[Find their investors](https://millionrounds.com/login?join=1&next=/app/investors)[All top lists](https://millionrounds.com/top-lists)

## More defence tech lists

[See all](https://millionrounds.com/top-lists?t=Defence%20Tech)

[*SA* *AI* *H* **Defence Tech startups that raised in 2026** 132 companies · $34B in 2026](https://millionrounds.com/top-lists/defensetech-startups-raised-2026)[*SA* *AI* *S* **Defence Tech startups in the United States that raised in 2026** 69 companies · $24B in 2026](https://millionrounds.com/top-lists/defensetech-startups-united-states-raised-2026)[*VE* *A* *NS* **Defence Tech startups founded in 2023** 20 companies · $3.3B](https://millionrounds.com/top-lists/defensetech-startups-founded-2023)[*U* *T* *CA* **Defence Tech startups in the United Kingdom that raised in 2026** 18 companies · $2.0B in 2026](https://millionrounds.com/top-lists/defensetech-startups-united-kingdom-raised-2026)[*RC* *FA* *ES* **Defence Tech startups founded in 2020** 13 companies · $832M](https://millionrounds.com/top-lists/defensetech-startups-founded-2020)[*CA* *A* *HA* **Defence Tech startups founded in 2024** 13 companies · $1.3B](https://millionrounds.com/top-lists/defensetech-startups-founded-2024)[*H* *SS* *MS* **Defence Tech startups founded in 2021** 11 companies · $4.8B](https://millionrounds.com/top-lists/defensetech-startups-founded-2021)[*S* *C* *MI* **Defence Tech startups founded in 2022** 11 companies · $7.1B](https://millionrounds.com/top-lists/defensetech-startups-founded-2022)

## More lists for Australia

[See all](https://millionrounds.com/top-lists?r=Australia)

[*FT* *F* *I* **Startups in Australia** 1,387 companies · $54B](https://millionrounds.com/top-lists/startups-australia)[*FT* *F* *I* **AI startups in Australia** 163 companies · $33B](https://millionrounds.com/top-lists/ai-startups-australia)[*A* *HH* *H* **Healthcare startups in Australia** 93 companies · $2.2B](https://millionrounds.com/top-lists/healthcare-startups-australia)[*CA* *V* *D* **IT Services startups in Australia** 85 companies · $762M](https://millionrounds.com/top-lists/it-services-startups-australia)[*M* *W* *H* **Financial Services startups in Australia** 82 companies · $2.1B](https://millionrounds.com/top-lists/financial-services-startups-australia)[*A* *CG* *B* **Fintech startups in Australia** 77 companies · $3.6B](https://millionrounds.com/top-lists/fintech-startups-australia)[*TP* *A* *H* **Biotech startups in Australia** 71 companies · $2.8B](https://millionrounds.com/top-lists/biotech-startups-australia)[*EE* *AE* *VE* **Energy startups in Australia** 70 companies · $8.2B](https://millionrounds.com/top-lists/energy-startups-australia)