Photo: Martin Falbisoner, CC BY-SA 3.0, via Wikimedia Commons
Dates
Mon, 1 June 2026 – Fri, 3 July 2026
Venue
NATO DIANA (distributed — 16 accelerator sites and 200+ test centres across NATO nations)
Location
London, United Kingdom
Organizer
NATO DIANA (Defence Innovation Accelerator for the North Atlantic)
Cost
free
Scale
regional
Recurrence
annual
Reg. deadline
15 May 2026
CFP deadline
3 Jul 2026
Format
Hybrid
Why it matters
DIANA is NATO's primary mechanism for pulling dual-use deep-tech startups and SMEs directly into the Alliance's procurement and capability pipeline via its Rapid Adoption Service, substantially compressing the typical 3–5 year procurement cycle to 6–12 months. Selection places a company within a trust network spanning 32 Allied markets, military end-users, and a NATO-linked investor community — a credibility signal that is exceptionally difficult to replicate commercially. For defence-adjacent startups, the non-dilutive funding structure (no equity taken, full IP retained) and access to live operational test environments make this one of the most commercially consequential accelerator programmes in the transatlantic defence ecosystem.
NATO DIANA's annual Challenge Call is an Alliance-wide open competition inviting dual-use deep-tech companies registered in any of the 32 NATO member states to submit proposals addressing critical defence and security challenge areas defined by NATO. Selected innovators join a six-month accelerator programme receiving €100,000 in non-dilutive contractual funding, access to over 200 test centres, expert mentorship, and military end-user engagement. Top performers are down-selected to a follow-on Mission Track with up to €300,000 in additional funding. The programme launched its first challenges in June 2023 and has grown rapidly, with the 2026 cohort being the largest to date at 150 companies.
Market intel
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NATO DIANA's annual Challenge Call has scaled rapidly since its 2023 pilot, with the 2026 cohort representing its largest intake: 150 companies selected from 3,680 applications across 24 NATO nations, each receiving €100,000 in non-dilutive Phase 1 funding. The current open round (2027 cohort) targets six challenge areas including human survivability, multidomain autonomy, and scalable air-defence countermeasures, with a submission deadline of 3 July 2026. A competitive down-select at the end of Phase 1 advances the strongest innovators to the Mission Track with up to €300,000 in additional funding.
MSPO is one of the highest-value contracting forums in Europe: the 2025 edition saw over PLN 6 billion in defence contracts signed on-site, making it a critical venue for business development in Central and Eastern European procurement markets. Poland's status as one of the EU's most active defence spenders — with the largest NATO GDP-percentage defence budget — gives suppliers direct access to live procurement pipelines and senior ministry decision-makers. For SMEs and startups, the Canadian Lead Nation programme, B2B matchmaking, and the DEFENDER awards offer structured pathways to partnerships, export opportunities, and visibility with global primes and government buyers.
As NATO's flagship public-communications event in Central Europe, it puts allied air, land and rescue capabilities in front of national leadership, ambassadors, military attachés and hundreds of thousands of visitors, giving suppliers high-visibility exposure alongside primes and government forces. The Special Partner Nation mechanism (Germany in 2026) has historically opened industrial and political cooperation opportunities, and the show serves as a debut platform for new platforms and modernization programs relevant to Czech and allied procurement.
Podkarpackie is one of Central Europe's most established aerospace manufacturing bases, and this summit is the region's strategic move to pivot from aviation to drone/dual-use technology — directly relevant to defence suppliers and SMEs seeking to enter or expand in the UAS and dual-use market. The co-located Dual Use Challenge pitch finals offer startups direct access to VC funds, investors, and industrial primes on a single day. For defence-adjacent firms, the live airfield showcase at Stalowa Wola–Turbia — including counter-drone systems — provides rare hands-on demonstration access in a NATO-ally operational context.
