| Abbreviation | Definition |
|---|---|
| NANX | Nanophase Technology Corporation |
| NAPE | National Properties Corporation |
| NARA | Nara Bank, N. A. |
| NARK | North Arkansas Bancshares, Inc. |
| NASB | N A S B Financial, Inc. |
| NASC | Network Access Solutions |
| NASI | North American Scientific, Inc. |
| NATH | Nathans Famous, Inc. |
| NATHW | Nathan's Famous, Inc. Warrants |
| NATI | National Instrument Corporation |
| NATKD | North American Technology Group, Inc. |
| NATR | Natures Sunshine Products, Inc. |
| NATS | Olympic Cascade Financial Corporation |
| NATW | Natural Wonders, Inc. |
| NATX | Natex Corporation |
| NAUC.PK | Net2 Auction |
| NAUG.OB | NowAuto Group |
| NAUT | Nautica Enterprises, Inc. |
| NAUT | Nautica Enterprises, Incorporated |
| NAVG | Navigators Group, Inc. |