| A. Olufsen Ship & Offshore AS | 5504 | HAUGESUND |
| Aalsrode Smede & Maskinfabrik A/S | 8500 | Grenaa |
| ABC-Maskin AS | 3735 | Skien |
| ABSOLENT AB | 531 40 | LIDKÖPING |
| AC Mejerimaskiner ApS | 9480 | Løkken |
| ACT Logimark AS | 2069 | JESSHEIM |
| Air Liquide Norway AS | 3050 | Mjøndalen |
| Alf I. Larsen AS | 4313 | Sandnes |
| Aluflex System AS | 2051 | JESSHEIM |
| Alumeco Norge AS | 2020 | Skedsmokorset |
| Alvøen AS | 5179 | GODVIK |
| Ama Salg AS | 1408 | KRÅKSTAD |
| Amada Norway AS | 1430 | Ås |
| APX Systems AS | 0667 | Oslo |
| Armatec AS | 0582 | Oslo |
| AS Einar Kunsts Etf | 0377 | OSLO |
| AS ESAB | 3264 | LARVIK |
| AS Hurum Plastindustri | 3475 | Sætre |
| ASI Automatikk AS | 3414 | Lierstranda |
| Astrup AS | 0915 | OSLO |
| AVK Norge AS | 3236 | Sandefjord |