| 3693 | Wading pools, plastic coated fabric | |
| 1729 | Wads, ammunition, manufacturing | |
| 2929 | Wafer processing equipment, semiconductor, manufacturing | |
| 2021 | Waferboard, manufacturing | |
| 3210 | Wafers (i.e., semiconductor devices), manufacturing | |
| 2930 | Waffle irons, electric, manufacturing | |
| 5139 | Waffle irons, electric, wholesale | |
| 1541 | Waffles, frozen, manufacturing | |
| 3694 | Wagons (toys), manufacturing | |
| 3694 | Wagons and sleighs (toys), manufacturing | |
| 3694 | Wagons, children's (e.g., coaster, express, play), manufacturing | |
| 3599 | Wagons, farm type, manufacturing | |
| 3599 | Wagons, horse-drawn, manufacturing | |
| 2921 | Wagons, lawn and garden type, manufacturing | |
| 2022 | Wainscoting, wood, manufacturing | |
| 1810 | Waistbands, trouser, made from purchased fabric | |
| 7499 | Wake up call services | |
| 3311 | Walkers (except baby), manufacturing | |
| 3699 | Walkers, baby, manufacturing | |
| 4530 | Walk-in commercial freezers and coolers, installation | |
| 3699 | Walking sticks, manufacturing | |
| 2915 | Walkways, moving, manufacturing | |
| 4530 | Wall cavities and attic space, insulating | |
| 3330 | Wall clocks, manufacturing | |
| 4520 | Wall components (exterior and interior), prefabricated, installation | |
| 5139 | Wall coverings (e.g., fabric, plastic), wholesale | |
| 5139 | Wall decorations, household, wholesale | |
| 2930 | Wall heaters, household, electric, manufacturing | |
| 3150 | Wall lamps, residential, manufacturing | |
| 3120 | Wall plates, electrical, manufacturing | |
| 2693 | Wall tile, ceramic, manufacturing | |
| 5143 | Wallboard (except wooden), wholesale | |
| 2021 | Wallboard, cellular fibre or hard pressed wood, manufacturing | |
| 2695 | Wallboard, gypsum, manufacturing | |
| 5143 | Wallboard, wooden, wholesale | |
| 5239 | Wallcovering stores, retail | |
| 1912 | Wallets (except metal), manufacturing | |
| 5232 | Wallets and billfolds, leather, retail | |
| 2029 | Wall-mounted hat and coat racks, wood, manufacturing | |
| 2424 | Wallpaper cleaners, manufacturing | |