| 5232 | Haberdashery stores, retail | |
| 2893 | Hack saw blades, manufacturing | |
| 0500 | Haddock fishing | |
| 2423 | Haematological agents, manufacturing | |
| 8519 | Haematological services, blood bank laboratory | |
| 5131 | Hair accessories, wholesale | |
| 5121 | Hair animal, wholesale | |
| 2519 | Hair care products (e.g., combs, curlers), rubber, manufacturing | |
| 5139 | Hair care products wholesale | |
| 2930 | Hair clippers for human use, electric, manufacturing | |
| 2893 | Hair clippers, for human or animal use, non-powered, manufacturing | |
| 2424 | Hair colouring preparations, manufacturing | |
| 5139 | Hair colours, dyes and sprays, wholesale | |
| 2930 | Hair curlers, electric, manufacturing | |
| 3699 | Hair curlers, metal, manufacturing | |
| 5121 | Hair dealing, wholesale | |
| 5233 | Hair driers, household, retail | |
| 2929 | Hair dryers, beauty parlour type, manufacturing | |
| 2930 | Hair dryers, electric (except equipment designed for beauty parlour use), manufacturing | |
| 9309 | Hair electrolysis services | |
| 1729 | Hair felts, nonwoven, manufacturing | |
| 1810 | Hair nets, made from purchased netting | |
| 3699 | Hair pencils (artists' brushes), manufacturing | |
| 3699 | Hair pieces (e.g., wigs, toupees, wiglets), manufacturing | |
| 2424 | Hair preparations (e.g., conditioners, dyes, rinses, shampoos), manufacturing | |
| 5139 | Hair preparations, wholesale | |
| 9309 | Hair removal (i.e., by electrolysis) | |
| 1911 | Hair removal (preparation of hides) | |
| 9309 | Hair replacement service | |
| 2424 | Hair sprays, manufacturing | |
| 2930 | Hair styling equipment, domestic, electric, manufacturing | |
| 9302 | Hair stylists, men's | |
| 9302 | Hair stylists, women's | |
| 5139 | Hair tonics and dressings, wholesale | |
| 9309 | Hair weaving service | |
| 1711 | Hair, animal (except horse), preparation (e.g., dressing, heckling, teasing, willowing) | |
| 1711 | Hair, horse, preparation (e.g., dressing, heckling, teasing, willowing) | |
| 5139 | Hairbrushes, wholesale | |
| 9302 | Hairdressers | |
| 9302 | Hairdressing salon | |