| NILES 0223679 · UCA50397 | SIMMONS MACHINE TOOL CORPORATION | 7 Machines9 Electronics | Registered | 1954 |
| NILES 2227102 | KIMBALL INTERNATIONAL, INC. | 20 Furniture | Pending | 2022 |
| NOLS 1334768 · TMA714005 | National Outdoor Leadership School Society, a legal entity | 41 Education | Registered | 2008 |
| NOLS 1334767 · TMA714106 · design | National Outdoor Leadership School Society, a legal entity | 41 Education | Registered | 2008 |
| NELES 1041228 · TMA576934 | an individual | 1 Chemicals3 Cosmetics5 Pharmaceuticals+6 | Registered | 2003 |
| NILEX 0884024 · TMA521575 | Nilex Inc. | 1 Chemicals19 Building42 Science | Registered | 2000 |
| NILEX 0834754 · TMA508923 · design | Nilex Inc. | 1 Chemicals17 Rubber19 Building+3 | Registered | 1999 |
| NILOS 0415282 · TMA264590 · design | NILOS GMBH | 1 Chemicals2 Paints3 Cosmetics+9 | Registered | 1981 |
| NILOS 0414490 · TMA262806 | NILOS GMBH | 1 Chemicals2 Paints3 Cosmetics+9 | Registered | 1981 |
| NILOS 0264797 · TMA127290 · design | ZILLER GMBH & CO. KOMMANDITGESELLSCHAFT | 7 Machines | Registered | 1962 |
| NILS 2312477 | Haute Performance LLC | 25 Clothing | Pending | 2024 |
| NOLEUS 2296145 | Owner not listed | 10 Medical | Pending | 2023 |
| NELES 2045269 | an individual | 6 Metal7 Machines35 Advertising+2 | Pending | 2020 |
| Nailsee 2111992 · TMA1179384 | Yiwu Anghu Import and Export Co. Ltd. | 3 Cosmetics | Registered | 2023 |
| NEOELEC 2235857 | DUBUIS ET CIE S.A.S. | 7 Machines | Pending | 2023 |
| NEOLESK 2005892 | Teva Pharmaceuticals USA, Inc. | 5 Pharmaceuticals | Pending | 2020 |
| NELEUS 2220888 · TMA1248547 | Shenzhen Nierousi Technology Co., Ltd. | 25 Clothing | Registered | 2024 |
| NULIGO 2219123 · TMA1280896 | Bunge Oils, Inc. | 1 Chemicals5 Pharmaceuticals | Registered | 2025 |
| NaLog 2198157 · TMA1249685 | an individual | 28 Toys | Registered | 2024 |
| NuWells 2197313 · TMA1237373 | an individual | 35 Advertising37 Construction42 Science | Registered | 2024 |
| NLUS 2179566 · TMA1232361 | an individual | 25 Clothing | Registered | 2024 |
| NEOLOK 2154351 · TMA1261085 · design | Nanjing Easthouse Electrical Co. Ltd. | 6 Metal9 Electronics | Registered | 2024 |
| NELISA 2147877 · TMA1199194 | 10408875 Canada Inc. | 1 Chemicals5 Pharmaceuticals | Registered | 2023 |
| nulaxy 2141952 · TMA1200334 | ZTD CO. LIMITED | 9 Electronics | Registered | 2023 |
| NULUXE 2048718 · TMA1166711 | The Gillette Company LLC | 8 Hand | Registered | 2023 |