Top list · Worldwide
Defence Tech startups founded in 2021
11 defence Tech startups founded in 2021 have raised money in rounds we track. These are the 11 that have raised the most, $4.8B between them, with the United States the most common home.
- 1
HelsingHelsing is a German defense technology company based in Munich, founded in 2021.Helsing is a German defense technology company based in Munich, founded in 2021.
Founded 2021Munich, Germany$3.7Blast round Jul 2026 - 2
Sierra SpaceSierra Space is a commercial aerospace and defense technology company based in Louisville, Colorado.Sierra Space is a commercial aerospace and defense technology company based in Louisville, Colorado.
Founded 2021Louisville, United States$550Mlast round Mar 2026 - 3
Muon SpaceMuon Space is an American aerospace startup founded in 2021, based in Mountain View, California.Muon Space is an American aerospace startup founded in 2021, based in Mountain View, California.
Founded 2021Mountain View, United States$295Mlast round Aug 2026 - 4
Defense UnicornsDefense Unicorns is a veteran-owned defense technology company founded in 2021, with roots tracing back to late 2020.Defense Unicorns is a veteran-owned defense technology company founded in 2021, with roots tracing back to late 2020.
Founded 2021Colorado Springs, United States$136Mlast round Jan 2026 - 5
Turion SpaceTurion Space is an aerospace and defense company based in Irvine, California, founded in 2021 by a team from SpaceX.Turion Space is an aerospace and defense company based in Irvine, California, founded in 2021 by a team from SpaceX.
Founded 2021Irvine, United States$115Mlast round Apr 2026 - 6
Uplift360Uplift360 is a cleantech startup focused on developing chemical-based technologies for recycling and reusing advanced materials, particularly in the defence andUplift360 is a cleantech startup focused on developing chemical-based technologies for recycling and reusing advanced materials, particularly in the defence and
Founded 2021Luxembourg City, Luxembourg$8.7Mlast round Feb 2026 - 7
Space DOTSSpace DOTS® (Space Data & Orbital Testing Solutions) is a UK-based space technology startup founded in 2021 and headquartered in London.Space DOTS® (Space Data & Orbital Testing Solutions) is a UK-based space technology startup founded in 2021 and headquartered in London.
Founded 2021London, United Kingdom$4.9Mlast round Sept 2025 - 8
MonopulseProducing professional grade UAVs for military, government and institutional use.Producing professional grade UAVs for military, government and institutional use.
Founded 2021Kongens Lyngby, Lithuania$2.2Mlast round Oct 2026 - 9
Integer TechnologiesInteger Technologies is a defense technology and software company founded in 2021 and based in Columbia, South Carolina.Integer Technologies is a defense technology and software company founded in 2021 and based in Columbia, South Carolina.
Founded 2021Columbia, Netherlands$1.2Mlast round Sept 2025 - 10
SeitecSeitec is a Canberra-based Australian defense technology startup founded in 2021 by CEO Daniel Stevens.Seitec is a Canberra-based Australian defense technology startup founded in 2021 by CEO Daniel Stevens.
Founded 2021Canberra, Australia$600Klast round Aug 2022 - 11
Astron SystemsAstron Systems is a UK-based rocket company focused on transforming the space launch industry.Astron Systems is a UK-based rocket company focused on transforming the space launch industry.
Founded 2021Didcot, United Kingdom$590Klast round Apr 2026
Munich, Germany
Louisville, United States
Luxembourg City, Luxembourg
London, United Kingdom
Kongens Lyngby, Lithuania
Columbia, Netherlands
Canberra, AustraliaCompanies founded in 2021 whose funding rounds we classed in this sector, ranked by the total they have raised in rounds we hold. Nobody pays to be on a list.
Who backed them?
Open any company for its rounds and investors, or search the investors who back defence Tech startups founded in 2021 in the app, with filters, lists and exports.
More defence tech lists
See all
SA
AIHDefence Tech startups that raised in 2026132 companies · $34B in 2026SAAI
SDefence Tech startups in the United States that raised in 202669 companies · $24B in 2026
VE
A
NSDefence Tech startups founded in 202320 companies · $3.3B
UT
CADefence Tech startups in the United Kingdom that raised in 202618 companies · $2.0B in 2026RC
FA
ESDefence Tech startups founded in 202013 companies · $832MCA
A
HADefence Tech startups founded in 202413 companies · $1.3B
GS
A
ANDefence Tech startups in Australia11 companies · $977MS
C
MIDefence Tech startups founded in 202211 companies · $7.1BMore lists worldwide
See all
GV
V
RPHealth startups worldwide12,811 companies · $81B
O
A
XAI startups worldwide10,238 companies · $830BGVVRPBiotech startups worldwide7,127 companies · $70B
D
B
FTBig data startups worldwide3,812 companies · $220BAF
R
SFintech startups worldwide3,200 companies · $94BOABAI startups that raised in 20262,922 companies · $540B in 2026FT
CE
PEnergy providers startups worldwide2,808 companies · $152B
A
P
OMarketing tech startups worldwide2,728 companies · $28B