| 5150 | Electronic tubes (e.g., receiving, transmitting, industrial), wholesale | |
| 3312 | Electrophoresis instruments, manufacturing | |
| 3190 | Electroplating machinery and equipment, manufacturing | |
| 2892 | Electroplating metals and metal products, for the trade | |
| 4540 | Electrostatic painting on site (including of lockers and fixtures), contractors | |
| 3190 | Electrostatic particle accelerators, manufacturing | |
| 2919 | Electrostatic precipitation equipment, manufacturing | |
| 3311 | Electrotherapeutic apparatus, manufacturing | |
| 3150 | Electrotherapeutic lamp units for ultra-violet and infra-red radiation, manufacturing | |
| 3311 | Electrotherapy units, manufacturing | |
| 2222 | Electrotype plate preparation services | |
| 2929 | Electrotyping machines, manufacturing | |
| 3312 | Elemental analyzers, manufacturing | |
| 8010 | Elementary schools | |
| 2930 | Elements, heating, for electric appliances, manufacturing | |
| 4520 | Elevated highway construction, general contractors | |
| 6021 | Elevated railway operation | |
| 5150 | Elevating machinery and equipment (except farm), wholesale | |
| 4530 | Elevator front installation, metal, contractors | |
| 2811 | Elevator guide rails, metal, manufacturing | |
| 4530 | Elevator installation, contractors | |
| 4530 | Elevator installation, conversion, and repair, contractors | |
| 4530 | Elevators and escalators, maintenance and repair | |
| 3530 | Elevators, aircraft, manufacturing | |
| 2915 | Elevators, farm type, manufacturing | |
| 6302 | Elevators, grain (storage only) | |
| 2915 | Elevators, passenger and freight, manufacturing | |
| 4520 | Elevators, storage, construction | |
| 5150 | Elevators, wholesale | |
| 0111 | Elite seed potatoes | |
| 0122 | Elk production | |
| 2429 | Embalming fluids, manufacturing | |
| 9303 | Embalming services | |
| 4520 | Embankments, construction | |
| 7521 | Embassies, federal government | |
| 9900 | Embassy, foreign governments | |
| 3691 | Emblems (pins, medals, insignia), manufacturing | |
| 1729 | Emblems, textile, manufacturing | |
| 1712 | Embossing broad-woven fabrics, for the trade | |
| 1712 | Embossing fabrics, for the trade | |