# The 43 largest aerospace and defence companies in Australia

Tamtam tracks 43 aerospace and defence companies headquartered in Australia. This list ranks all of them by number of employees on LinkedIn, led by Defence Australia, BAE Systems Australia and ASC Pty Ltd. Their median headcount is 356. Half of them were founded in 1999 or later. The most common headquarters are Adelaide (4), Canberra (4) and Port Melbourne (2).

The aerospace and defence sector in Australia includes large government defence bodies, as well as established private companies and younger firms. Defence Australia, with over 14,000 employees, is focused on national security through international partnerships. BAE Systems Australia develops defence technologies, while ASC Pty Ltd specializes in submarine construction and maintenance. Austal is a global shipbuilder, and Codan Limited provides rugged electronics and engineering.

The companies span a range of activities from direct defence operations and shipbuilding to specialized electronics and engineering services. A notable pattern is the concentration of headquarters in Adelaide, which hosts BAE Systems Australia, Defence Science and Technology Group, Babcock Australia & New Zealand, and Nova Systems.

🇦🇺 Australia · 43 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Defence Australia](https://www.tamtam.ai/c/defence-australia) (defence.gov.au)<br>Protects national interests through international partnerships and local industry investment to develop innovative capabilities for security and protection of all citizens. | Defense and Space Manufacturing | 🇦🇺 Russell | 14,134 | 1901 |
| 2 | [BAE Systems Australia](https://www.tamtam.ai/c/bae-systems-australia) (baesystems.com)<br>Develops cutting-edge technologies to protect Australia through diverse engineering and global teamwork, providing large-scale defense solutions and career opportunities in a growing sector. | Defense and Space Manufacturing | 🇦🇺 Adelaide | 3,725 | 1953 |
| 3 | [ASC Pty Ltd](https://www.tamtam.ai/c/asc-pty-ltd) (asc.com.au)<br>An Australian company specializing in building and maintaining submarines for the Royal Australian Navy, as well as providing training for submariners | Defense and Space Manufacturing | 🇦🇺 Osborne | 2,874 | 1985 |
| 4 | [Austal](https://www.tamtam.ai/c/austal) (austal.com)<br>A global shipbuilder that designs, constructs, and sustains advanced commercial and defence vessels, with a focus on aluminium shipbuilding and international projects | Shipbuilding | 🇦🇺 Henderson | 1,937 | 1988 |
| 5 | [Defence Science and Technology Group (DSTG)](https://www.tamtam.ai/c/defence-science-and-technology-group-dstg) (dst.defence.gov.au)<br>A national agency applying science and technology to protect Australia, providing advice, innovative solutions, and technical support for defense and national security | Defense and Space Manufacturing | 🇦🇺 Adelaide | 1,237 | 1974 |
| 6 | [Babcock Australia & New Zealand](https://www.tamtam.ai/c/babcock-australia-and-new-zealand) (babcock.com.au)<br>Providing defence and civil markets with maritime sustainment, secure communications, helicopter missions, and fleet management across Australasia. | Defense and Space Manufacturing | 🇦🇺 Adelaide | 1,197 |  |
| 7 | [Leidos Australia](https://www.tamtam.ai/c/leidos-australia) (leidos.com)<br>Delivering complex technology solutions across defence, intelligence, aviation, and health markets through systems integration, maritime autonomy, airborne surveillance, and government ICT modernisation services. | Defense and Space Manufacturing | 🇦🇺 Scoresby | 1,141 |  |
| 8 | [ADF Careers](https://www.tamtam.ai/c/adf-careers) (adfcareers.gov.au)<br>Offering 250+ career opportunities in Navy, Army, and Air Force across various fields with paid training, competitive salaries, and benefits | Armed Forces | 🇦🇺 Fairbairn | 1,124 |  |
| 9 | [Codan Limited](https://www.tamtam.ai/c/codan-limited) (codan.com.au)<br>A global group of electronics and engineering businesses specializing in rugged and reliable hardware, software, and embedded systems for various industries worldwide | Appliances, Electrical, and Electronics Manufacturing | 🇦🇺 Mawson Lakes | 1,006 |  |
| 10 | [Raytheon Australia](https://www.tamtam.ai/c/raytheon-australia) (raytheonaustralia.com.au)<br>Delivering innovative, reliable defence solutions and whole-of-life capabilities to support Australian Defence Force missions and national security. | Defense and Space Manufacturing | 🇦🇺 Canberra Airport | 863 |  |
| 11 | [Saab Australia](https://www.tamtam.ai/c/saab-australia) (saab.com)<br>A prime systems integrator specializing in delivering complex defence and civil security projects, committed to collaboration, innovation, and meeting customer needs | Defense and Space Manufacturing | 🇦🇺 Mawson Lakes | 816 | 1988 |
| 12 | [Nova Systems](https://www.tamtam.ai/c/nova-systems) (novasystems.com)<br>Design, integration, and delivery of complex programs for Defence, emergency services, and civil applications with deep operational understanding. | Engineering Services | 🇦🇺 Adelaide | 695 | 1999 |
| 13 | [AIM Defence](https://www.tamtam.ai/c/aim-defence) (aimdefence.com)<br>Specializing in ultra-compact high-power laser systems with advanced AI tracking, the company focuses on developing directed energy and AI systems for defense purposes | Defense and Space Manufacturing | 🇦🇺 Port Melbourne | 682 | 2017 |
| 14 | [Hofmann Engineering Pty Ltd](https://www.tamtam.ai/c/hofmann-engineering-pty-ltd) (hofmannengineering.com)<br>Provider of specialist engineered parts and services for mining, defence, transport, and energy industries worldwide Focus on research, development, and manufacturing across multiple countries | Mechanical Or Industrial Engineering | 🇦🇺 Bassendean | 484 | 1969 |
| 15 | [Bhagwan Marine](https://www.tamtam.ai/c/bhagwan-marine) (bhagwanmarine.com)<br>A leading marine solutions provider offering offshore, inshore, and subsea services, engineering, civil construction support, and project management across various industries | Maritime | 🇦🇺 Perth | 468 | 1998 |
| 16 | [DroneShield](https://www.tamtam.ai/c/droneshield) (droneshield.com)<br>Develops specialized security solutions protecting people and critical infrastructure from unauthorized drone threats using engineering expertise across defense, intelligence, and aerospace sectors. | Defense and Space Manufacturing | 🇦🇺 Sydney | 452 | 2014 |
| 17 | [Downer Professional Services](https://www.tamtam.ai/c/downer-professional-services) (downerprofessionalservices.com.au)<br>A multi-disciplinary advisory and delivery partner for defense, government, and infrastructure projects in Australia, focused on building sovereign capability | Business Consulting and Services | 🇦🇺 Canberra City | 441 |  |
| 18 | [QinetiQ Australia](https://www.tamtam.ai/c/qinetiq-australia) (qinetiq.com)<br>An integrated global defense and security organization delivering innovative technologies and capabilities through testing, engineering, and advisory services in Australia | Defense and Space Manufacturing | 🇦🇺 Southbank | 432 | 2008 |
| 19 | [Synergy Group](https://www.tamtam.ai/c/synergy-group) (synergygroup.net.au)<br>A pragmatic consulting firm that collaborates with clients to deliver success through transformation, creative solutions, and lasting partnerships in Australia | Business Consulting and Services | 🇦🇺 Canberra | 402 | 1999 |
| 20 | [Hanwha Defence Australia](https://www.tamtam.ai/c/hanwha-defence-australia) (hanwha-defence.com.au)<br>Manufacturer of self-propelled artillery and infantry fighting vehicles in Australia, with a focus on establishing a manufacturing facility to support domestic and global operations | Defense and Space Manufacturing | 🇦🇺 Melbourne | 386 | 2019 |
| 21 | [Boeing Aerostructures Australia](https://www.tamtam.ai/c/boeing-aerostructures-australia) (boeing.com.au)<br>Specializes in designing and manufacturing advanced composite aerostructure components for commercial aircraft, with a long heritage in Australian aviation | Aviation and Aerospace Component Manufacturing | 🇦🇺 Port Melbourne | 379 |  |
| 22 | [Northrop Grumman Australia](https://www.tamtam.ai/c/northrop-grumman-australia) (northropgrumman.com)<br>A leading provider of autonomous, C4ISR, cyber, logistics and strike systems in Australia, focused on innovation, job creation, and technology leadership | Defense and Space Manufacturing | 🇦🇺 Canberra | 356 |  |
| 23 | [TAE Aerospace](https://www.tamtam.ai/c/tae-aerospace) (taeaerospace.com)<br>Global aerospace company offering innovative design, engineering, maintenance, manufacturing, and repair solutions for military engines, APUs, avionics, and aircraft components | Aviation and Aerospace Component Manufacturing | 🇦🇺 Bundamba | 335 | 2000 |
| 24 | [RJE Global Pty Ltd](https://www.tamtam.ai/c/rje-global-pty-ltd) (rjeglobal.com)<br>Engineering, project management, and construction services for mining, resources, infrastructure, power generation, and distribution sectors with focus on quality and in-house capabilities | Construction | 🇦🇺 Morphettville | 327 | 1996 |
| 25 | [Birdon Group](https://www.tamtam.ai/c/birdon-group) (birdongroup.com)<br>A diversified global group providing whole of life solutions to maritime, military, infrastructure, and resource sectors, operating nationally and internationally | Maritime Transportation | 🇦🇺 Port Macquarie | 309 | 1977 |
| 26 | [PWR Advanced Cooling Technology](https://www.tamtam.ai/c/pwr-advanced-cooling-technology) (pwr.com.au)<br>Global leader in high performance thermal management for racing teams and various industries Specializes in aluminium brazing, machining, design, and product validation Engineering excellence with a focus on teamwork | Industrial Machinery Manufacturing | 🇦🇺 Stapylton | 284 | 1997 |
| 27 | [Electro Optic Systems](https://www.tamtam.ai/c/electro-optic-systems) (eos-aus.com)<br>An Australian technology firm specializing in defense, space, and communications products Offers advanced optical, laser, and satellite solutions globally | Defense and Space Manufacturing | 🇦🇺 Canberra | 254 | 1983 |
| 28 | [Jacobs Australia Pty Ltd](https://www.tamtam.ai/c/jacobs-australia-pty-ltd) (jacobs.com)<br>A subsidiary of a global engineering group, specializing in providing technical services to Defence sectors with a focus on innovation and opportunity for skilled professionals | Defense and Space Manufacturing | 🇦🇺 Canberra | 233 | 1947 |
| 29 | [Q-CTRL](https://www.tamtam.ai/c/q-ctrl) (q-ctrl.com)<br>Specializing in quantum technology, we provide infrastructure software to address hardware error and instability, enabling its practical application in various sectors | Software Development | 🇦🇺 Chippendale | 205 | 2017 |
| 30 | [Northrop Grumman Australia](https://www.tamtam.ai/c/northrop-grumman-australia-braddon) (northropgrumman.com)<br>A leading global security company providing innovative solutions in autonomous systems, cyber, C4ISR, strike, logistics, and modernisation to customers worldwide | Defense and Space Manufacturing | 🇦🇺 Braddon | 202 |  |
| 31 | [Advanced Navigation](https://www.tamtam.ai/c/advanced-navigation) (advancednavigation.com)<br>Advanced Navigation is a leader in AI robotics and navigation technologies, offering solutions for land, air, sea, and space applications with exceptional performance and precision | Robotics Engineering | 🇦🇺 Sydney | 193 | 2012 |
| 32 | [NIOA](https://www.tamtam.ai/c/nioa) (nioa.com.au)<br>Global munitions supplier specializing in firearms, weapons, and munitions Serving defense forces, law enforcement, sporting markets, with strategic locations worldwide | Defense and Space Manufacturing | 🇦🇺 Pinkenba | 138 |  |
| 33 | [PentenAmio AU](https://www.tamtam.ai/c/pentenamio-au) (pentenamio.com)<br>Provides advanced digital security solutions for national security and resilience. Focuses on complex digital challenges, secure mobility, and AI-driven deception technologies for government and defense markets. | Computer and Network Security | 🇦🇺 Braddon | 123 | 2014 |
| 34 | [HEO](https://www.tamtam.ai/c/heo) (heospace.com)<br>A space technology company specializing in non-Earth imaging, analytics for spacecraft, advancing understanding of space objects, promoting transparency and sustainability in space activities | Defense and Space Manufacturing | 🇦🇺 Haymarket | 117 | 2016 |
| 35 | [Mackay Australia Pty Ltd](https://www.tamtam.ai/c/mackay-australia-pty-ltd) (derwentindustries.com.au)<br>Supplier of engineered rubber and metal/rubber composite products for Automotive, Defence, Industrial, and Rail markets Focused on providing cost-effective solutions globally | Industrial Machinery Manufacturing | 🇦🇺 Dandenong South | 44 | 1932 |
| 36 | [W&E PLATT PTY LTD](https://www.tamtam.ai/c/w-and-e-platt-pty-ltd) (plattmounts.com)<br>Specializing in weapon mount design, manufacture, installation, and logistics support for military vehicles and naval vessels worldwide for over 40 years | Defense and Space Manufacturing | 🇦🇺 Ingleburn | 34 | 1980 |
| 37 | [LC60 AI - LatConnect 60](https://www.tamtam.ai/c/lc60-ai-latconnect-60) (lc60.ai)<br>Australian AI company generating vital insights for agriculture, carbon, and resources monitoring using satellite data, proprietary AI, and its own LEO constellation. | Defense and Space Manufacturing | 🇦🇺 Perth | 30 | 2019 |
| 38 | [Luminact Pty Ltd](https://www.tamtam.ai/c/luminact-pty-ltd) (luminact.com.au)<br>A small Australian-owned company providing engineering, project management, and commercial services to the Defence and industry sectors, with a focus on innovation and integration | Defense and Space Manufacturing | 🇦🇺 Scoresby | 27 | 2016 |
| 39 | [Swiss Helicopter Maintenance AG](https://www.tamtam.ai/c/swiss-helicopter-maintenance-ag) (shm-ag.ch)<br>Provides helicopter maintenance, continuing airworthiness management, and is an authorized service center for Airbus, Leonardo, and Guimbal helicopters. | Airlines and Aviation | 🇦🇺 Chur | 25 | 2000 |
| 40 | [Equans Axima Australia - T/A Noske-Kaeser Marine](https://www.tamtam.ai/c/equans-axima-australia-t-a-noske-kaeser-marine) (marine.equans.com)<br>A global leader in marine and offshore solutions, providing innovative technology in air conditioning, fire protection, and more tailored to clients' needs | Maritime Transportation | 🇦🇺 Salisbury North | 22 | 2015 |
| 41 | [Neumann Space](https://www.tamtam.ai/c/neumann-space) (neumannspace.com)<br>Develops efficient, scalable in-space electric propulsion systems for satellites, converting solid propellants into plasma for thrust in various low Earth orbit missions. | Defense and Space Manufacturing | 🇦🇺 Kent Town | 21 | 2015 |
| 42 | [Geospatial Intelligence](https://www.tamtam.ai/c/geospatial-intelligence) (geoint.global)<br>An Australian company specializing in geospatial intelligence for environmental management, natural resources, defense, and security through the intelligent use of spatial data | IT Services and IT Consulting | 🇦🇺 Barton | 18 | 2002 |
| 43 | [Arlula](https://www.tamtam.ai/c/arlula) (arlula.com)<br>Provides infrastructure and single access point for procuring, managing, and processing satellite imagery at scale, connecting Earth observation data to people and businesses. | Defense and Space Manufacturing | 🇦🇺 Haymarket | 12 | 2018 |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.

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## The same list elsewhere

- [Aerospace and defence companies in the world](https://www.tamtam.ai/l/aerospace-and-defense-companies-in-the-world) (6,084)

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Source: https://www.tamtam.ai/l/aerospace-and-defense-companies-australia