| Japan Chemical Innovation and Inspection Institute | |
| Japan Cloud | Tokyo |
| Japan College of Social Work | |
| Japan Communications, Inc. | Tokyo |
| Japan Computer Emergency Response Team Coordination Center | Tokyo |
| Japan Computer System Seller Association | Tokyo |
| Japan Dev | Kanagawa |
| Japan Digital Communications Ltd | Tokyo |
| Japan Digital Design Co., Ltd | Tokyo |
| Japan Digital Space Economy Federation | Tokyo |
| Japan Economic Research Institute | |
| Japan Electronic Device Industries Association | Tokyo |
| Japan Electronics and Information Technology Industries Association | Tokyo |
| Japan Electronics College | Tokyo |
| Japan Electronics Show Association | Tokyo |
| Japan Embedded Systems Technology Association | Tokyo |
| Japan Energy Fund Ventures | |
| Japan Environmental Sanitation Center | |
| Japan EO-Satellite Service Ltd | |
| japan Finance Corporation | |
| Japan Food Research Laboratories | |
| Japan Heart Foundation | |
| Japan Industrial Imaging Association | |
| Japan Information Processing Service Co., Ltd | Tokyo |
| Japan Institute for Labour Policy and Training | |
| Japan Institute for Promoting Invention and Innovation | |
| Japan Institute of Electronics Packaging | Tokyo |
| Japan International Aerospace Exhibition | |
| Japan International University | |
| Japan Internet Exchange Co., Ltd | Tokyo |
| Japan Internet Providers Association | Tokyo |
| Japan Laser Corporation | Tokyo |
| Japan Marco International Group | |
| Japan Material Technologies Corporation | |
| Japan Mathematica Users Group | Tokyo |
| Japan Metaverse Association | Tokyo |
| Japan Minicomputer Systems Co., Ltd | |
| Japan Network Information Center | Tokyo |
| Japan Organ Transplant Network | |
| Japan PHP Users Group | Tokyo |
| Japan Process Development Co., Ltd | Tokyo |
| Japan Public Health Association | |
| Japan Registry | Tokyo |
| Japan Science and Technology Agency | Saitama |
| Japan Semiconductor Industry Association | Tokyo |
| Japan Smartphone Security Association | |
| Japan Society of Mathematical Education | Tokyo |
| Japan Software Corporation | Tokyo |
| Japan Space Systems | |
| Japan Startup Support Association | Osaka |