| 1810 | Neckties, women's, misses' and juniors', made from purchased fabric | |
| 5232 | Neckwear, apparel, retail | |
| 1810 | Neckwear, cut and sewn from materials owned by others | |
| 1810 | Neckwear, made from purchased fabric | |
| 1730 | Neckwear, made in knitting mills | |
| 1810 | Neckwear, men's and boys', made from purchased fabric | |
| 5232 | Neckwear, men's and boys', retail | |
| 5131 | Neckwear, men's and boys', wholesale | |
| 5131 | Neckwear, women's, misses' and children's, wholesale | |
| 1810 | Neckwear, women's, misses' and juniors', made from purchased fabric | |
| 5232 | Neckwear, women's, retail | |
| 0113 | Nectarine growing | |
| 0113 | Nectarine orchards and farms | |
| 3311 | Needle holders, surgical, manufacturing | |
| 1729 | Needle loomed felts, manufacturing | |
| 2913 | Needle roller bearings, manufacturing | |
| 2926 | Needles for industrial sewing machines | |
| 2926 | Needles for knitting machinery, manufacturing | |
| 2899 | Needles, hand knitting, manufacturing | |
| 3311 | Needles, hypodermic, manufacturing | |
| 3230 | Needles, phonograph and stylus, manufacturing | |
| 3311 | Needles, suture, manufacturing{ | |
| 1810 | Needlework art, done on clothing owned by others | |
| 5232 | Needlework stores, retail | |
| 1810 | Negligees, girls', cut and sewn from purchased fabric | |
| 1730 | Negligees, made in knitting mills | |
| 1810 | Negligees, women's and misses', cut and sewn from purchased fabric | |
| 9199 | Neighborhood development advocacy groups | |
| 8532 | Neighbourhood centres | |
| 8532 | Neighbourhood meal services | |
| 5520 | Neighbourhood pub | |
| 3150 | Neon and electric signs, manufacturing | |
| 3150 | Neon signs, manufacturing | |
| 5150 | Neon signs, wholesale | |
| 2411 | Neon, manufacturing | |
| 2413 | Neoprene, manufacturing | |
| 1429 | Nepheline syenite mining | |
| 1429 | Nepheline syenite quarrying | |
| 3312 | Nephelometers (except meteorological), manufacturing | |
| 3312 | Nephoscopes, manufacturing | |