European Defence Companies Database

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QTI Quantum Telecommunications ItalyFlorence, Italy

Builds quantum key distribution systems that secure telecom and fibre-optic networks against classical and quantum computer attacks.

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Reiser Simulation and TrainingBerg, Germany

Designs and manufactures high-fidelity flight simulators, maintenance training rigs and augmented reality training devices for military and civil aviation customers worldwide.

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RTsysCaudan, France

Designs and manufactures underwater acoustic systems, autonomous underwater vehicles and mine countermeasures equipment for navies, research institutes and commercial maritime operators.

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RaymetricsAthens, Greece

Greek lidar company developing remote sensing systems for defence applications including UAV detection, CBRN threat analysis, maritime surveillance and optical ground stations.

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RevEng.AILondon, United Kingdom

London cybersecurity company building AI models for reverse engineering and binary analysis to verify compiled software, firmware and third-party artifacts for defence and enterprise teams.

QuantumDiamondsMunich, Germany

Builds quantum diamond microscopes that use nitrogen-vacancy sensors to map electrical defects in semiconductor chips with 100x higher resolution than traditional inspection tools.

QogniflyBucharest, Romania

Romanian deep-tech defence company building AI-enabled autonomous UAV and counter-drone systems, including the STUD interceptor drone developed with US partner XDOWN. Raised €2M in 2025 to open a Bucharest production facility targeting 2,000-3,000 interceptors per month against Shahed-type threats.

Quantum DiceOxford, United Kingdom

Award-winning quantum technology spinout from Oxford University developing quantum random number generators (QRNGs) that provide verifiably secure random numbers for cybersecurity applications.

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Quantum IndustriesVienna, Austria

Entangled-photon Quantum Key Distribution systems for government and critical infrastructure, covering distances up to 350 km. Founded by IQOQI Vienna scientists, raised €9.5M in 2025, and supplies the European Quantum Communication Infrastructure (EuroQCI) programme.

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Quantum Optics JenaJena, Germany

Builds quantum key distribution systems for ultra-secure fibre and satellite communications. Fraunhofer IOF spin-off whose entangled photon-pair sources are independently certified and deployed in European quantum network projects. Founded in 2020 in Jena.

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QuellUnited Kingdom

Scotland-based defence AI company with the Deep Truth machine learning framework, the SkySpyke 360-degree passive counter-drone detection system, the WiSAD passive RF surveillance detector and the MASC AI-generated adaptive camouflage pattern generator.

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QUICKBLOCKStirling, United Kingdom

Stirling-based SME producing lightweight, ballistic and blast-rated modular building blocks made from 100% recycled polypropylene. Awarded a £238,000 DASA contract with the UK MoD for force protection and vehicle checkpoint infrastructure.

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QUSLebring, Austria

Smart textile sensor technology that integrates washable vital-sign monitoring into military uniforms. Supplies biometric sensing for the Rheinmetall Gladius 2.0 soldier system, tracking heart rate, respiration and movement data in real time during operations.

R.I. GroupTrepuzzi, Italy

Italian manufacturer of modular military shelters, bunkers, sentry boxes, field hospitals and force protection structures serving NATO, EU and allied ministries. Holds NATO AQAP 2110 and STANAG 2280 ballistic protection certifications, with deployments in Kosovo, Iraq, Lebanon and Afghanistan.

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Radar SystemsRiga, Latvia

Develops and manufactures ground-penetrating radar systems derived from space radar technology. Over 1,000 GPR units sold across five continents for subsurface imaging, mine detection and infrastructure assessment.

Radionor CommunicationsHorten, Norway

Digital phased-array tactical broadband radios for military operations, combat-proven by Norwegian forces in Ukraine.

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Radiotechnika MarketingWroclaw, Poland

Produces military cable harnesses, fibre optic systems, EMI filters and power supplies meeting MIL-STD-1553B DataBus standards. Holds NATO Entity Code 879H and QPL certification from the US Defense Supply Center Columbus.

RantelonTallinn, Estonia

Designs and manufactures electronic systems including electronic warfare equipment, drone detection systems, and RF devices. Provides solutions for defence, security, and industrial sectors.

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Ray ServiceCzech Republic

Ray Service manufactures cable harnesses, electromechanical assemblies and electronic equipment for aviation, space and defence customers.

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RB DefenceWarsaw, Poland

Private capital group integrating, developing and producing drones, avionics, electronic warfare and communication electronics to dual-use standards. Operates through subsidiaries in Poland and the United Kingdom.

RBL Defence PolskaWarsaw, Poland

Warsaw-based defence startup founded by military veterans developing modular composite shelters, loitering munitions, remotely operated electric combat vehicles and a patented cellular geotextile ballistic protection system. Won a Diamond Shields award at the Poland Security Congress 2025.

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RcamKyiv, Ukraine

Develops AI-powered surveillance cameras for battlefield applications with automatic object detection and recognition capabilities. Their systems provide passive monitoring for military and security applications.

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RD ALFA MicroelectronicsRiga, Latvia

Designs and manufactures radiation-hardened, ITAR-free analog integrated circuits for space and defence. ESA-qualified components on the European Preferred Parts List. Supplies Thales Alenia Space and Airbus Defence and Space.

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RE-liONAmersfoort, Netherlands

Builds immersive VR training systems for military and law enforcement, including deployable squad-level kits with 12 trainee positions and 95% availability. Customers include the Dutch, German, Finnish and Danish Ministries of Defence and the European Defence Agency.

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Réaltra Space Systems EngineeringDublin, Ireland

Ireland's only dedicated space electronics company, designing and manufacturing avionics, telemetry systems, and on-board AI for satellites and launch vehicles. Supplies the Ariane 6 video telemetry system for ArianeGroup and the payload interface unit for ESA's PLATO mission.

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ReamdaDublin, Ireland

Develops EOD robots and remote disruptor platforms for military and security customers. Products include the Riddler robot, R-Evolve, and deployable surveillance systems, exported to the UK, Switzerland, and the USA since 2006.

RebelvoltHelsinki, Finland

Builds silent, emission-free battery-based e-Generators that replace diesel generators in defence field bases and command posts, with customers in three NATO countries and an assigned NCAGE code for portable e-Generators. Designed and manufactured in Finland and validated through the DEFINE accelerator and VTT.

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Rekord Hale NamiotoweBielsko-Biala, Poland

Manufactures military-grade tent structures, shelters and base life support systems for NATO forces since 1998. Products include combat tents rated to -32C, rapid-deploy maintenance hangars and turn-key field camps for Polish, US and allied militaries.

ReLocFinland

Tactical GNSS-denied navigation built from European commercial components. Fuses GNSS, IMU and odometry with jamming and spoofing detection, integrating with SitaWare Frontline, ATAK and NATO Generic Vehicle Architecture.

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RepsenseVilnius, Lithuania

AI-powered narrative intelligence platform that tracks disinformation and influence operations across text, broadcast and video media. Deployed by NATO Strategic Communications Centre of Excellence. Raised EUR 2M seed in December 2025.

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ResQuantLodz, Poland

Deep-tech cybersecurity company focused on hardware implementation of post-quantum cryptography standards. Their secure element chiplet integrates NIST-selected PQC algorithms at the silicon level.

RevobeamGdansk, Poland

Develops beam-reconfigurable antennas and wireless communication systems for UAVs and IoT devices, specializing in anti-jamming technology for defence applications.

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RF MicrotechPerugia, Italy

Perugia University spin-off founded in 2007 designing antennas, phased arrays, microwave filters and RF systems for satellite communications, avionics and defence, including radars for military applications. Has supplied space-qualified components for the IRIDE and ExoMars programmes.

RFenceLille, France

Provides radiofrequency monitoring and security solutions for detecting, locating, and analyzing radio wave emitting devices to protect against drones, jamming, and data theft threats.

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Rift DynamicsOslo, Norway

Norwegian builder of low-cost attritable combat drones for European armed forces. The Wåsp FPV+ is an AI-capable strike and surveillance drone with 1.5 kg payload and 150+ km/h speed, fielded with the Norwegian Army and ammunition partner Nammo, with production capacity of 20,000 units per month.

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RinicomLancaster, United Kingdom

Lancaster-based secure communications and detection specialist delivering voice, data and real-time connectivity systems for defence, emergency response and critical infrastructure.

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RISEPORT EuropeHamburg, Germany

Develops the ARGOS APS passive counter-drone system using AI-assisted acoustic and optical sensor fusion instead of radar to avoid electronic detection. Designed by soldiers for soldiers with a target price under EUR 100,000 per unit for scalable frontline deployment.

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RiskawareBristol, United Kingdom

Incident modelling consultancy building CBRN hazard, cyber attack, and disease dispersion simulation platforms for UK MoD, Dstl, and government agencies. Ploughshare spin-out commercialising Dstl research.

RIZ-PEZagreb, Croatia

Croatian manufacturer of the TAKRAD tactical radio, an SDR-based MANET radio with AES-256 encryption and DSSS frequency-hopping supplied to the Croatian Armed Forces. Small Zagreb firm focused on secure military communications for dismounted soldiers and vehicles.

Roark AerospaceLondon, United Kingdom

Provides drone detection services and autonomous defence solutions including counter-UAS systems, with global defence networks spanning 40+ countries.

Robodrone IndustriesBrno, Czech Republic

Brno-based drone manufacturer producing the SuperHornet tactical quadcopter, a foldable 4 kg MTOM UAV with 14 km range, 6-hour endurance, and open-source mission planning for defence and commercial users.

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RoboneersKyiv, Ukraine

Builds the Lynx unmanned ground vehicle and Saber remote weapon station for frontline logistics, casualty evacuation, and remote combat. Deployed by multiple Ukrainian brigades including the 47th Mechanized and 5th Assault Brigade.

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Robosys AutomationSouthampton, United Kingdom

Develops VOYAGER AI maritime autonomy software that converts crewed vessels into uncrewed surface vessels with IMO Degree 4 autonomy, sold to government and defence customers. Opened Southampton UK headquarters in 2025 with offices in USA, Canada and India.

Robot AviationHønefoss, Norway

Leading developer of unmanned aerial systems (UAS) offering SkyRobot family of fixed-wing aircraft for military and commercial surveillance, monitoring, and communication relay applications.

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RobottoAalborg, Denmark

Aalborg-based AI software company building edge-level perception, detection and tracking for drones and ground robots, including GNSS-denied autonomous navigation used by defence and security operators.

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RokeRomsey, United Kingdom

Roke builds defence and security technologies across AI, autonomy, cyber, secure communications and electromagnetic-spectrum operations.

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Romanian InSpace EngineeringBucharest, Romania

Bucharest space engineering company developing the CORVUS 6U nanosatellite, designed to intercept and geolocate radio interference for Romanian defence and intelligence agencies. Around 50 engineers serving space, security and safety markets.

RSI EuropeVilnius, Lithuania

Lithuanian company specializing in development and manufacturing of innovative radio and electronic systems for defence sector, including remote explosives initiation systems and FPV drones.