cluster

Defense and space startups

Defense tech, drones and counter-drone, ISR, aerospace, maritime, gov-adjacent hardware.

232

companies tracked

48

from the last 2 years

47

startup-relevant federal grants ($12M)

Share of accelerator intake by year

2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027

Newest in the cluster

  • Mass MagneticsY Combinator S26

    USA-made magnetics for aerospace, robotics, and defense.

  • Earendil RoboticsY Combinator S26

    Drone swarm defence at a small-unit level

  • Hop AeroY Combinator S26

    Rocket cargo delivery to contested environments

  • ExosatY Combinator S26

    Building a sovereign Starlink

  • Vernius Systems, Inc.Y Combinator S26

    Autonomous radar guidance for interceptors

  • Isengard Industries IncY Combinator S26

    Mass-produced AI strike systems and Counter-UAS

  • Greypoint IndustriesY Combinator S26

    Building drone swarms that hunt drone operators

  • GUILDY Combinator S26

    Making aerospace parts faster and cheaper for defense

  • IMPACT DronesY Combinator S26

    Air Defense as a Service for Civilian Infrastructure.

  • General AviationY Combinator X26

    Fix ATC by connecting aircraft to the internet

  • Maquoketa ResearchY Combinator X26

    The intelligence layer for drones

  • OrnadyneY Combinator X26

    We're building robot birds for surveillance.

Most AI-visible

Highest AEO scores - how well AI assistants can read and cite them.

  • Orbital Arc58
  • Boom57
  • blueflite55
  • Pierce Aerospace55
  • Alba Orbital55
  • ARCA Dynamics54
  • Avocado Systems54
  • Zelim54

Recent rounds

  • Gallosunknown$50M

By program

  • Y Combinator85
  • Techstars76
  • Plug and Play53
  • 500 Global8
  • a16z speedrun5
  • SOSV5

Browse all 232 Defense and space companies →

Updated hourly from accelerator directories, funding news and federal grant data.