Defense Tech Startups
1,128 companies tagged Defense Tech, with their investors and founders.
Shield AI develops AI pilot systems for military applications including aircraft, drones, ships, satellites, and submarines. The company serves the U.S. Department of Defense and allied nations.
32 investors
Axiom Space develops commercial space stations and provides access to low-Earth orbit microgravity environments for research, manufacturing, and innovation by governments, researchers, and organizations.
22 investors
Saronic builds autonomous surface vessels — including the 180-foot, long-range Marauder — along with Echelon, a command-and-control software layer for planning, simulating and operating single vessels or fleets. The company targets defense and commercial maritime customers and is developing Port Alpha, a shipyard for producing its vessels in the United States.
21 investors
Loft Orbital operates space infrastructure, providing satellites equipped with sensing resources, onboard edge compute, and connectivity that let customers run missions without deploying their own hardware. It serves commercial and government customers, including national security stakeholders, through virtual missions on its satellite constellation.
18 investors
Skyryse is an aviation hardware and software company that builds SkyOS, a universal flight operating system, which powers its first aircraft, the Skyryse One, to simplify aircraft control during standard operations, bad weather, and emergencies. The company focuses on improving flight safety through automation for pilots.
18 investors
True Anomaly designs and builds hardware and software systems for space security and defense. The company serves military and government space forces with technologies for on-orbit operations and counterspace capabilities.
18 investors
Eclypsium provides hardware and firmware security solutions for enterprises to identify and address vulnerabilities in chips, low-level code, and digital supply chains. The company delivers actionable tools and research to help organizations build trust in critical infrastructure code and devices.
17 investors
REGENT designs and manufactures Seaglider wing-in-ground-effect aircraft for regional coastal transportation and defense logistics, offering high-speed zero-emission travel between coastal cities and military applications.
17 investors
Relativity Space develops Terran R, a reusable medium-to-heavy-lift rocket designed for efficiency and scalability, serving government entities, telecommunications companies, and commercial customers for space access missions. The company focuses on making space exploration more accessible, reliable, and sustainable.
17 investors
Vatn designs and manufactures modular, low-cost autonomous underwater vehicles (such as the Skelmir S6 and S12) with proprietary autonomy, navigation, and control software for GPS-denied and contested maritime environments. Its systems serve defense, government, allied, research, and commercial operators for undersea ISR, logistics, sensing, and payload delivery missions.
15 investors
Apex manufactures productized satellite bus platforms at scale for constellation deployment and critical missions. The company provides standardized, configurable spacecraft designed to reduce production timelines and cost while serving U.S. and allied space operators across multiple orbital regimes.
14 investors
Castelion develops advanced strike systems and defense hardware with a focus on rapid iteration and scalable manufacturing to reduce costs and development timelines for U.S. defense applications. The company aims to restore American industrial agility in weapons development and strengthen national security capabilities.
14 investors
goTenna builds mesh networking hardware and software for off-grid connectivity in mission-critical operations. The platform enables location tracking, collaborative mapping, and encrypted messaging for tactical and emergency response teams.
14 investors
Impulse Space develops in-space mobility infrastructure and spacecraft, enabling transportation and logistics between Earth orbit, the Moon, and Mars. The company serves commercial, defense, and scientific customers seeking reliable and affordable orbital mobility solutions.
14 investors
Mach Industries designs and manufactures defense systems including unmanned aerial systems, precision munitions, high-altitude surveillance platforms, and propulsion testing capabilities for military applications.
14 investors
Onebrief develops software designed for military and defense organizations, enabling real-time collaboration and knowledge access for command and operational teams. The product integrates processes with real-time updates for defense and government use cases.
14 investors
Array Labs develops radar technology for aerospace and other leading industries. The company focuses on systems engineering, software development, and radar systems innovation.
13 investors
Reality Defender develops an AI platform for detecting deepfakes and synthetic media, serving enterprise organizations to prevent fraud and impersonation. The company offers multimodal detection capabilities through an API and SDK for developers.
13 investors
Sakana AI develops frontier AI research and products, including large language models, multi-agent orchestration systems, and AI solutions tailored for Japanese enterprises and public sector organizations.
13 investors
Zeno develops nuclear batteries that convert heat from decaying radioisotopes into electricity for extended-duration applications in space and deep-sea environments where conventional power sources are inadequate. The batteries are designed for frontier missions requiring reliable power without refueling or maintenance for years.
13 investors
Capella Space designs, builds, and operates synthetic aperture radar (SAR) satellite constellations that provide all-weather, day-and-night Earth observation imagery at sub-0.25m resolution. It offers an automated end-to-end tasking and data delivery platform serving defense and intelligence, maritime, disaster response, and infrastructure monitoring customers.
12 investors
Dragos provides cybersecurity software, threat intelligence, and professional services to protect operational technology (OT), IT, and IoT assets in industrial environments. The company serves critical infrastructure operators in sectors including energy, manufacturing, water, and gas utilities.
12 investors
Hidden Level develops advanced RF (radio frequency) sensing technology for defense, aviation, and intelligence applications. The company builds critical sensing systems to enhance situational awareness and decision-making for military and civilian stakeholders.
12 investors
ICEYE operates a satellite-based synthetic aperture radar (SAR) system that delivers persistent, real-time monitoring and damage assessment data globally. The company serves governments, insurers, and disaster response organizations seeking actionable intelligence for national security, natural disaster response, and risk evaluation.
12 investors