| N4AHN REPEATER-REMOTE | Ham Radio |
| N5IW | Ham Radio |
| Nagra Audio | Tube Amplifiers |
| Nakataube | DIY Tube Amplifiers, Links |
| Nakatubo | DIY Tube Amplifiers |
| Nakazawa | DIY Tube Amplifiers |
| NAT - High End Tube Amplification | Tube Amplifiers |
| National Valve Museum | Museum |
| NavNett.com | Links |
| NBS Electronics Lord Valve | Tubes, Tube Amplifier Services |
| ND2X - QRO via Russia + Mobile Ops | Ham Radio |
| Nelco Products | Cable ties, heat shrink tubing, expandable sleeving and wiring accessories |
| Neumann USA Microphones | Microphones |
| NeutrikŪ | Connectors |
| New Audio Frontiers | Tube Amplifiers, Speakers |
| New Sensor Corporation | Tubes, Parts, Guitar Amplifiers |
| New Zealand Vintage Radio Society | Articles, CV Register |
| Newark Electronics | Potentiometers, Parts |
| Newmarket Transformers UK | Power Transformers |
| Next Power Company | Articles, Software |
| Nichicon | Capacitors |
| Nichicon (America) Corporation | Capacitors |
| Nick Dangerous | DIY Tube Amplifiers |
| Nick England | Ham Radio |
| Nicolas Radio Collection | Tube Radios & Related Vintage Items, Links |
| Nightingale Simetel S.p.A. | Tube Amplifiers |
| Nigthingale | Tube Amplifiers, Speakers |
| Nik-Nik | Tube Amplifiers |
| Nikolic Dragan | Tubes, Tube Amplifiers |
| Nirvana Audio | interconnect-, speaker- cables, power cords |
| Nixie Clock and Nixie Wristwatch site | Vintage Tube Equipment |
| NJ7P Tube Database Search | Tube Database |
| NJ7P Tube Database Search | Tube Database |
| Noble Potentiometers | Attenuators, Potentiometers |
| Noguchi transformers | Transformers |
| Nolan's Redneck Boatanchor Page! | Tube Testers, Test Equipment |
| Norh Loudspeaker Co. Ltd | Speakers |
| Norman Koren Vacuum tube audio page | DIY Tube Amplifiers |
| North Creek Music Systems | Speakers |
| Northwest Vintage Radio Society | Tube Radio Society |
| Norwegian Historical Radio Society | Tube Radios & Related Vintage Items |
| NOS Electron Valves | Tubes |
| NOS Tubes | Vacuum Tubes Retailers New and NOS Tubes |
| NOS tubes for high end audio | NOS Tubes for high end audio |
| NOS Valves | Tube Amplifier Service |
| Nostalgia Air | Vintage Radio References |
| Nostalgic Collectibles | Tube Amplifier Service |
| NTE Electronics | Parts |
| NTI | Test Equipment |
| Nuance & Fluence | DIY Tube Amplifiers |
| Nutshell High Fidelity | Speakers, DIY Tube Amplifers, Potentimeters, VSAC |
| NVE | Tube Amplifiers |
| NY Audio Repair | Tube Amplifier Service and Modifications |