The Fourth Law
The Fourth Law develops autonomy software and modules for small drones, FPV systems and other robotic platforms. Its stack supports autonomous navigation, terminal guidance, simulation and mission execution for defense operators using scalable unmanned systems.
Market context
The Fourth Law is one of the clearer autonomy-layer companies in defence robotics, with battlefield-validated software and increasingly productized autonomous drone capability. It matters because it sits at the control layer that can turn cheap unmanned platforms into more effective defensive systems at scale.
Facts
- Website: https://thefourthlaw.ai/
- HQ: Kyiv, Ukraine
- Founded: 2024
- Segment: defense robotics
- Known funding rounds: 1
Investors
- Axon - Lead - Unknown - 1 funding event - first seen 2026-02-16
Autonomy modules and simulations for defensive FPV drones
The Fourth Law develops autonomy software, modules and simulations for defensive FPV drones. The company focuses on scalable terminal guidance and autonomous drone systems for defence applications, with public product activity around TFL-1 and autonomous interceptor systems.
- Target environment: Defence operations, frontline drone use, FPV drone manufacturing, autonomy testing, drone simulations and military procurement environments.
- Deployment model: Defence autonomy model built around software, autonomy modules, drone integrations, simulations, partner production and Ukrainian defence procurement channels.
- Customer context: Drone manufacturers, defence customers, Ukrainian military-linked procurement channels, systems integrators and units needing autonomous FPV capability.
- Workflow context: Terminal guidance, FPV autonomy, drone interception, autonomy simulation, defensive drone systems and scalable autonomous strike support.
- Commercial maturity: The Fourth Law has high strategic relevance in Ukraine-linked defence autonomy and public product milestones. Commercial maturity is tied to codification, procurement channels, partner manufacturing…
- Market position: Ukrainian defence autonomy company positioned in the FPV drone guidance and autonomy layer.
- Adoption constraints: Battlefield reliability, electronic warfare, model robustness, production integration, export controls, procurement continuity and rapid adversary adaptation.
- Adjacent context: Defence robotics, autonomous drones, FPV autonomy, military robotics, terminal guidance and drone simulations.
- Source confidence: high
Team
- Yaroslav Azhnyuk - Founder
Supply chain relationships
- RSI Europe - Lithuania Drone Manufacturing Mou - The Fourth Law and RSI Europe signed an MOU for drone AI technology and Lithuanian manufacturing capacity.
Context tags
- Defence FPV drone builder - Peer Group - The Fourth Law builds defence FPV and tactical strike drones.
- Defence FPV strike - Workflow - The Fourth Law drones perform FPV strike missions.
- Defence UAV builder - Peer Group - The Fourth Law develops defence unmanned aircraft systems.
- Loitering precision strike - Workflow - The Fourth Law supports loitering precision strike capability.
- Unmanned aircraft OEM - Stack Layer - The Fourth Law builds unmanned aircraft systems.
- Autonomous mission execution - Capability - The Fourth Law supports autonomous mission execution.
- Defence customers - Customer Environment - The Fourth Law serves defence customers.
- Contested defence environments - Customer Environment - The Fourth Law systems operate in contested environments.
The Fourth Law canonical Korthos profile