| NOC Outsourcing & Consulting Co., Ltd | Tokyo |
| Noda Institute for Scientific Research | |
| Node-RED User Group Japan | |
| Noile-Immune Biotech Co., Ltd | Tokyo |
| Nomura Holdings, Inc. | |
| Nomura Research Institute Ltd | Tokyo |
| Nomura Securities Co., Ltd | Tokyo |
| Nomura System Corporation | Tokyo |
| North Asia University | |
| Noster Co., Ltd | Kyoto |
| Notre Dame Seishin University | |
| Novita, Inc. | |
| NOW Co., Ltd | Tokyo |
| Nozomi Corporation | Tokyo |
| NPS Co., Ltd | Tokyo |
| NRI SecureTechnologies Co., Ltd | Tokyo |
| NSD Co., Ltd | Tokyo |
| NTC Corporation | Tokyo |
| NTT Card Solution Corporation | Tokyo |
| NTT Communications Corporation | Tokyo |
| NTT Comware Corporation | Tokyo |
| NTT Corporation | Tokyo |
| NTT Data Business Systems Corporation | Tokyo |
| NTT Data CCS Corporation | Tokyo |
| NTT Data Corporation | Tokyo |
| NTT Data Customer Service Technology Corporation | Tokyo |
| NTT Data Global Solutions Corporation | Tokyo |
| NTT DATA Information Technology Corporation | Tokyo |
| NTT Data Institute of Management Consulting Co., Ltd | Tokyo |
| NTT Data Intramart Corporation | Tokyo |
| NTT DATA Mathematical Systems, Inc. | Tokyo |
| NTT Data MHI Systems Corporation | Tokyo |
| NTT Data NJK Corporation | Tokyo |
| NTT Data Sekisui Systems Corporation | Tokyo |
| NTT Data Smart Sourcing Corporation | Tokyo |
| NTT DATA Value Engineer Corporation | Tokyo |
| NTT Docomo | Tokyo |
| NTT DOCOMO Ventures Co., Ltd | Tokyo |
| NTT Electronics Corporation | Tokyo |
| NTT InfraNet | Tokyo |
| NTT InterCommunication Center | |
| NTT Learning Systems Corporation | Tokyo |
| NTT PC Communications, Inc. | Tokyo |
| NTT Plala, Inc. | Tokyo |
| NTT Qonoq, Inc. | |
| NTT Resonant Technology Co., Ltd | Tokyo |
| NTT Security Holdings | Tokyo |
| NTT SmartTrade Co., Ltd | Tokyo |
| NTT-ME Corporation | Tokyo |
| NUCB Undergraduate School | |