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Thistle

THISTLE OÜ

Tallinn, Estonia

Counter-UAS & Air DefenseWeaponsOptronicsDefense Software & AI
System Integrator, Software DeveloperSupplies Land Forces, Homeland Security & Police
Profile last updated: October 11, 2026

About

Thistle is a defense system integrator based in Tallinn, Estonia working in counter-uas & air defense, weapons, optronics +1 more.

Thistle, operating as Thistle Shield, is an Estonian defence technology company developing lightweight counter-drone protection systems. Its core product is a robotic weapon station that detects, tracks and neutralises FPV and Group 1 drones, using passive multi-sensor detection and edge AI with human authorisation of every engagement. Nodes can be fitted to dismounted, vehicle, UGV or fixed-site platforms, and can be networked into clusters and a wider layered defence picture. Thistle also provides integration onto existing platforms and command systems, crew training with live-fire acceptance, and sustainment over the service life. Work is delivered in-house in Estonia and through partners where export rules allow. The company's development has been co-funded by Estonian and EU programmes, and it reports live-fire trials with a NATO member state's armed forces.

Location

Tallinn, Estonia

Company type

Limited company

Legal name

THISTLE OÜ

Focus areas

counter-UAScounter-FPVair defencerobotic weapon stationedge AIsensor fusionlive-fire validatedhuman-on-the-loop

Languages

ENET

Products & capabilities

Defense domains

Counter-UAS & Air DefenseWeaponsOptronicsDefense Software & AI

Supply-chain role

System IntegratorSoftware Developer

What they offer

HardwareSoftwareEngineering ServicesMaintenance & RepairTraining

Products

Thistle Shield Node

Counter-UAS robotic weapon station

Passive multi-sensor robotic weapon station that detects, tracks and engages FPV and other Group 1 drones, with on-board edge AI, human-authorised engagement and mounting on dismounted, vehicle, UGV or fixed-site platforms. Works with in-service rifles, shotguns, directional jammers and counter-UAS rockets.

Thistle Shield Cluster

Networked counter-UAS node cluster

Group of 4 to 10 networked Thistle Shield nodes covering one protected area. Nodes share tracks, allocate targets to individual weapons and are commanded by a single operator.

Thistle Shield Layer

Layered counter-drone defence system

Layer of clusters joined into one picture, taking cueing from radar, long-range EO, acoustic arrays and tactical pictures such as ATAK. Effector- and C2-agnostic, integrated onto existing platforms and command systems.

End users

Land ForcesHomeland Security & Police

Credentials & affiliations

Certifications

Ukrainian verified supplier status

Issued by: Ukraine

NCAGE code

Issued by: NATO

Awards

1st place, Great Pitch on to Startup World Cup

Wolves Summit

1st place, Define Accelerator pitch

DEFINE Accelerator

5,000 start-up prize

Estonian Business Hub in Latvia

Top 15

Latitude59

Industry memberships

Estonian Defence & Aerospace Industry AssociationDefence Estonia cluster

Other defense companies in Estonia

View all