| AB | AC | AD | AE | AF | AG | AI | AL | AM | AN | AP | AQ | AR | AS | AT | AU | AV | AW | AX | AZ |
| Index entry | NAICS Code | U.S. NAICS Title |
|---|---|---|
| Aquarium accessories, metal, manufacturing | 332999 | All Other Miscellaneous Fabricated Metal Product Manufacturing |
| Aquariums | 712130 | Zoos and Botanical Gardens |
| Aquariums made from purchased glass | 327215 | Glass Product Manufacturing Made of Purchased Glass |
| Aqueduct construction | 234910 | Water, Sewer, and Pipeline Construction |
| AB | AC | AD | AE | AF | AG | AI | AL | AM | AN | AP | AQ | AR | AS | AT | AU | AV | AW | AX | AZ |