|
| 7493 | Abattoir cleaning | |
| 1511 | Abattoirs | |
| 7511 | Aboriginal administration, public | |
| 7421 | Aboriginal affairs advisor (technical consulting) | |
| 8512 | Abortion clinics | |
| 4520 | Above-ground swimming pools, residential, installation | |
| 3312 | Abrasion testing machines, manufacturing | |
| 3311 | Abrasive points, wheels and disks, dental, manufacturing | |
| 2699 | Abrasive products, manufacturing | |
| 1410 | Abrasive sand mining | |
| 1410 | Abrasive sands, crude, mining | |
| 2699 | Abrasive-coated products, manufacturing | |
| 5150 | Abrasives, wholesale | |
| 2520 | ABS (acrylonitrile-butadiene-styrene) pipe, manufacturing | |
| 2423 | Absorbent cotton, sterilized, manufacturing | |
| 2101 | Absorbent paper stock, manufacturing | |
| 2919 | Absorbers, gas, manufacturing | |
| 3313 | Absorption analyzers, industrial process type (e.g., infrared), manufacturing | |
| 1110 | Absorption plant, natural gas | |
| 4520 | Abutment, construction, general contractors | |
| 1810 | Academic caps and gowns, cut and sewn from purchased fabric | |
| 3312 | Acceleration indicators and systems components, aerospace type, manufacturing | |
| 2411 | Accelerators (i.e., basic synthetic chemicals), manufacturing | |
| 3312 | Accelerometers (except aerospace type), manufacturing | |
| 6592 | Acceptance companies | |
| 4540 | Access flooring, installation | |
| 5040 | Accessories and parts for snowmobiles, retail | |
| 5030 | Accessories and parts, automobile, retail store | |
| 5030 | Accessories and parts, motor vehicle, wholesale (except tires and tubes) | |
| 5131 | Accessories, clothing, men's and boys', wholesale | |
| 5232 | Accessories, clothing, women's, retail | |
| 6603 | Accident and health insurance | |
| 6603 | Accident and sickness branches of life insurance companies | |
| 7514 | Accident claims (non-commercial), federal | |
| 6603 | Accident insurance underwriters | |
| 9199 | Accident prevention association | |
| 8532 | Accommodation for family in medical crisis | |
| 5510 | Accommodation services, camping grounds and trailer parks | |
| 5510 | Accommodation services, guest houses and tourist homes | |
| 5510 | Accommodation services, hotel | |
