| 3212 | Wadded quilt manufacturing | |
| 3219 | Wadding manufacturing | |
| 3117 | Wafer baking | |
| 3833 | Waffle iron, electric, manufacturing | |
| 3811 | Waffle iron, non-electric, manufacturing | |
| 9100 | Wage control agency, governmental | |
| 3849 | Wagon box, for horse-drawn vehicle, manufacturing | |
| 3909 | Wagon, children's, manufacturing | |
| 3849 | Wagon, horse-drawn, manufacturing | |
| 3849 | Wagon, horse-drawn, repairing | |
| 3842 | Wagon, passenger and freight, railroad, manufacturing | |
| 3559 | Wainscoting, rubber, manufacturing | |
| 3220 | Waistband cutting and sewing | |
| 3909 | Walking stick manufacturing | |
| 3699 | Wall base, precast terrazzo, manufacturing | |
| 3320 | Wall case, primarily of wood, manufacturing | |
| 3691 | Wall coping, clay, manufacturing | |
| 3521 | Wall paint manufacturing | |
| 3819 | Wall tile, metal, manufacturing | |
| 3411 | Wallboard, except gypsum, manufacturing | |
| 3419 | Wallpaper manufacturing from stock | |
| 3824 | Wallpaper trimmer manufacturing | |
| 3411 | Wallpaper, stock, manufacturing | |
| 5000 | Wallpapering | |
| 9399 | War veterans' association | |
| 3320 | Wardrobe manufacturing | |
| 7192 | Warehouse operation | |
| 3824 | Warping machine manufacturing | |
| 1130 | Warrening service | |
| 3220 | Wash suit cutting and sewing | |
| 3559 | Washable service apparel, rubber, manufacturing | |
| 3319 | Washboard, wooden and part wooden, manufacturing | |
| 3213 | Washcloth knitting | |
| 3233 | Washer, leather, manufacturing | |
| 3819 | Washer, metal, manufacturing, not in rolling mill | |
| 3560 | Washer, plastic, manufacturing | |
| 3559 | Washer, rubber, manufacturing | |
| 9520 | Washerwoman, own account | |
| 3523 | Washing compound manufacturing | |
| 3523 | Washing compound, containing soap, manufacturing | |