Defense Tech Startups
1,120 companies tagged Defense Tech, with their investors and founders.
Raven Space Systems develops Microwave Assisted Deposition (MAD) 3D printing technology to manufacture aerospace-grade thermoset and ceramic composite structures, thermal protection, and related parts. Its automated process targets aerospace and defense applications such as hypersonics, propulsion systems, reentry vehicles, satellites, aircraft, and missiles.
2 investors
RBC Bearings is an international manufacturer and marketer of engineered precision bearings and related products, serving industrial, aerospace, and defense customers. Founded in 1919, it operates manufacturing and distribution facilities across the US, Mexico, France, Germany, Poland, and China, and offers a B2B ordering portal for customers.
2 investors
Reaction Dynamics develops the Aurora rocket using a patented hybrid rocket engine to provide dedicated, cost-effective launches for small-satellite operators into Low Earth Orbit. Based in Canada, it aims to establish sovereign Canadian launch capability, with suborbital and orbital launches planned for 2026 and 2028.
2 investors
Rebel Space Tech develops spectrum intelligence software that monitors, detects, and classifies RF interference and electronic warfare threats targeting satellite and teleport operators. The platform serves space operators, government/defense agencies, and research institutions operating in contested electromagnetic environments.
2 investors
REDLattice is a U.S.-owned company that builds AI-driven cyber capabilities, VR systems, and cyber intelligence products for military, intelligence, and law enforcement missions. Its offerings support counterterrorism, anti-trafficking, and other national security operations, including tools for network access, intelligence collection, and vulnerability research.
2 investors
Reflex Aerospace designs and assembles customizable satellite platforms for commercial and defence missions, offering optical Earth observation, synthetic aperture radar, and satellite communications solutions. The company focuses on shortening satellite build times to about 12 months and is based in Germany.
2 investors
Rhea Space Activity (RSA) is an astrophysics technology developer building systems for national security, including infrared satellites, directed energy, artificial intelligence, small satellites, and autonomous underwater vehicles. It serves governments and defense forces, with a focus on lunar and deep space applications for the U.S. and allied nations.
2 investors
Root Access designs and manufactures American-made electronic components for drones and autonomous robots, including perception sensors (cameras, LiDAR, depth), navigation modules (GPS, IMUs, time-of-flight), and communication modules (Wi-Fi, Bluetooth, RF). The company focuses on reshoring the design and manufacturing of critical, NDAA-compliant electronics in New York, USA.
2 investors
Safran is an aerospace and defense manufacturer supplying aircraft equipment such as landing gear, nacelles, wiring, avionics and navigation systems, along with aircraft interiors, engines for airplanes and helicopters, defense systems, and space technologies. It serves airframers, commercial and military aviation, armed forces, and space missions.
2 investors
Saildrone builds wind- and solar-powered uncrewed surface vehicles (USVs) equipped with radar, sonar, AIS, and AI-driven sensor fusion for long-endurance maritime missions. Its platforms serve defense and government customers for applications such as anti-submarine warfare, ISR, maritime domain awareness, counter-narcotics, and ocean mapping.
2 investors
SARsatX is an Earth observation and satellite manufacturer that designs and builds small satellites and delivers radar and optical satellite imagery to governments, organizations, and businesses. The company focuses on the Middle East and Africa region, providing high-resolution imagery and data-driven insights for defense, security, infrastructure, and environmental monitoring applications.
2 investors
Scaleout provides federated and edge AI infrastructure that runs the full model training loop on devices in the field, so models improve on local conditions without raw data leaving the site. It serves defence and industrial customers, including European defence programmes and NATO initiatives, for applications such as computer vision for counter-UAS and ISR.
2 investors
SE3 Labs builds spatial AI that gives machines real-time 3D reconstruction and spatial understanding so they can perceive, reason, and act autonomously, controlled through natural language. The company focuses on autonomous systems for defence applications, positioning itself as a Europe-based AI partner.
2 investors
Seagate Space provides orbital launch services from mobile offshore maritime platforms, offering an alternative to land-based launch ranges. It serves the aerospace, defense, and space launch industry with patent-pending offshore platform designs aimed at increasing launch cadence and reducing weather and community-related constraints.
2 investors
SecuLetter is a content security company that protects against malware and threats hidden in files and documents, serving public sector, financial, and defense customers. The KOSDAQ-listed cybersecurity firm is expanding its content security category since its 2023 listing.
2 investors
SensusQ is an intelligence management platform that collects and fuses multi-domain data from sources such as social media, open-source feeds, sensors, and mobile app reports, then supports data analysis, visualization, and standardized reporting. It serves civilian, law enforcement, critical national infrastructure, and security sector organizations.
2 investors
Shearwater builds Smart Flight, an AI-powered autonomy software platform for UAV/drone operations that optimizes mission planning, route efficiency, endurance, and in-flight adaptation using weather and terrain data without hardware changes. It serves commercial and defense (dual-use) drone operators and manufacturers, integrating with systems like PX4 and Ardupilot.
2 investors
Sigen AI develops a video integrity platform that turns live or recorded feeds into tamper-evident, cryptographically verifiable assets with object-level signing, role-based encryption, and real-time redaction. It serves defense, intelligence, public safety, and law enforcement operations, and also targets retail analytics, smart city, and AI-training use cases.
2 investors
Silent Ventures is an early-stage venture capital firm that invests in founders building aerospace, defense, and national security companies. The firm focuses on concept-stage pre-seed and seed investments in the defense technology sector.
2 investors
SMG develops high-precision resonant MEMS inertial and gravity sensors, including accelerometers, gyroscopes, and the GAIA gravity system, spun out from Cambridge University research. Its sensors serve autonomous navigation, aerospace, defence, robotics, and geophysics/subsurface exploration applications.
2 investors
SKYDEX engineers patented impact-protection technology used across applications including footwear, fall protection, athletic gear, vehicle blast protection, and soldier body armor. It serves defense and military customers such as the U.S. Marine Corps, as well as industries like sports stadiums, film sets, and construction.
2 investors
Skydweller Aero develops and manufactures very large solar-powered, autonomous aircraft designed for perpetual uncrewed flight carrying heavy payloads, with applications including ISR and maritime patrol. The aerospace company serves defense and long-endurance surveillance markets and is headquartered in Oklahoma City with R&D facilities in Spain and Mississippi.
2 investors
SMTC Corporation is a mid-size provider of end-to-end electronics manufacturing services (EMS), including PCBA production, systems integration, testing, enclosure fabrication, product design, sustaining engineering, and supply chain management. It serves global OEMs and emerging technology companies across market segments such as medical, semiconductor, retail and payment systems, test and measurement, industrial and clean tech, telecom, and defense and aerospace.
2 investors
Solafune is a company applying geospatial technology to address social, environmental, and industrial problems. It operates as a global team focused on satellite/geospatial data analysis.
2 investors