| 3150 | Headlamps, sealed beam, and other motor vehicle light bulbs, manufacturing | |
| 3190 | Headlight switches, manufacturing | |
| 3190 | Headlights (i.e., lighting fixtures), motor vehicle, manufacturing | |
| 3230 | Headphones (e.g., radio, stereo, computer), manufacturing | |
| 3210 | Heads (e.g., recording, read/write), manufacturing | |
| 3692 | Heads, banjo and drum, manufacturing | |
| 3312 | Heads-up display (HUD) systems, aeronautical, manufacturing | |
| 1810 | Headwear, infants', cut and sewn from purchased fabric | |
| 5232 | Headwear, women's, retail | |
| 8519 | Healers, christian science | |
| 6603 | Health and accident insurance | |
| 5231 | Health and beauty aids, retail | |
| 7512 | Health and medical care programs, federal government | |
| 5110 | Health and personal grooming products, wholesale agents and dealers | |
| 5231 | Health appliance stores | |
| 5231 | Health appliance stores selling primarily to other businesses but also selling to household consumers | |
| 8532 | Health association, voluntary | |
| 8532 | Health care promotion service associations | |
| 7310 | Health care research agencies, noncommercial | |
| 9112 | Health care standards agencies | |
| 9241 | Health club, physical fitness | |
| 7512 | Health extension services, provincial | |
| 5220 | Health food stores, retail | |
| 5122 | Health food, wholesale | |
| 7512 | Health grants, provincial administration | |
| 7512 | Health inspection services, provincial | |
| 6603 | Health insurance carriers, without providing medical services | |
| 6720 | Health insurance coverage consulting service | |
| 6603 | Health insurance for pets | |
| 6603 | Health insurance underwriters | |
| 6603 | Health insurance, indemnity plans (except medical service) | |
| 6603 | Health insurance, prepaid, organization | |
| 7512 | Health insurance, registration board, provincial | |
| 3150 | Health lamps, electric, manufacturing | |
| 3150 | Health lamps, infra-red and ultra-violet-radiation, manufacturing | |
| 7421 | Health management consulting services | |
| 8532 | Health oriented community action group | |
| 9112 | Health professionals' associations | |
| 7512 | Health programs, provincial government | |
| 7512 | Health promotion programs, federal administration | |