What is DSEI Japan? Learn About DSEI Japan

Japan's Only Fully Integrated Defence Event

DSEI Japan is the only large-scale, fully integrated defence event in the country, bringing together the global defence industry and Japan’s defence community.

With public sentiment shifting towards increased defence spending and changes to Japan’s pacifist stance, defence companies now have more opportunities to proactively engage with overseas Ministries of Defence.

As a result, events like DSEI Japan have gained significant importance, attracting strong domestic and international interest. The 2025 edition featured over 450 exhibitors from around the world and hosted a range of high-level conferences, seminars, and bilateral meetings with world-class speakers.

REGISTER INTEREST

This was my first time attending, and I had heard that the event had doubled in scale compared to the previous edition and was extremely successful. I personally felt it was a very dynamic and energetic event. In particular, not only was it a valuable opportunity for Japanese manufacturers to showcase their presence to other countries, but I also found it meaningful to learn about products from European and other regional manufacturers that are not very familiar in Japan.
ATLA
This was Fujitsu’s first time exhibiting at a defence show, and it was a great opportunity for exposure. We were able to connect with many visitors and potential partners from overseas, which supports our broader goal of expanding internationally. Building relationships abroad also helps us bring fresh ideas to the table and contribute new perspectives to the industry.
Keita Yashima
Senior Director, Global Defence Office Fujitsu Japan Limited
This was our second time at DSEI Japan, and we saw significantly more traffic than before. Our goal was to expand our brand and show the world all that SAAB has to offer. One of the highlights was the strong media presence, and we were proud to have great visibility with our customers and wider audience.
Lars Eriksson
Country Manager and Representative Director, SAAB
You can understand the state of the art military equipment, technology, concept. Some of them are very important when we consider strategy. In short, everything is necessary to do our business as a think tanker.
Takuma Matsu
Researcher, The Sasakawa Peace Foundation
DSEI Japan gave us a valuable opportunity to strengthen existing relationships and explore potential partnerships at various levels. It also offered some useful insight into current industry developments and allowed us to have meaningful conversations with the right people.
Sandrine Williams
PR & Engagement Consultant, Systematic Software Engineering Limited
Well Organized Event. High Tech Companies from all over world. Japan has a heavy footprint in high tech + defense.
Kosmas Triantafyllidis
Attaché (ICT Officer), Ministry of Foreign Affairs of the Hellenic Republic
That it's a wonderful opportunity to network with other people and companies from that area.
Tiago Penedo
Deputy Head of Mission and Director of the Portuguese Cultural Centre, Embassy of Portugal in Japan