- NEC Corporation
- NEC Europe Ltd. [Middlesex]
- NEC Europe Ltd., Network Laboratories
- NEC Laboratories Europe
- NIC Research Labs [Chile]
- National ICT Australia [Sydney]
- National Research Council [Italy]
- National Research Council of Italy | Consiglio Nazionale delle Ricerche
- National Taiwan University of Science and Technology
- National University of Defense Technology [China]
- Network & Services Research Laboratory, Department of Electronic & Electrical Engineering
- Network Architectures and Services Group
- Networks and Performance Analysis
- Nokia Siemens Networks [Munich]
- North Carolina State University [Raleigh]
- Norwegian University of Science and Technology
- Norwegian University of Science and Technology [Trondheim]