| Rank | Abbreviation | Meaning |
|---|
| ***** | NWDA | National Water Development Agency
| |
| ***** | NWDA | National Water Development Authority
| |
| **** | NWDA | North West Dancing Association
| |
| *** | NWDA | Northwest District Association
| |
| *** | NWDA | North West Deaf Association
| |
| *** | NWDA | NorthEast Window Door Association
| |
| *** | NWDA | North West Development Association
| |
| ** | NWDA | North West Development Agency
| |
| ** | NWDA | North West Design Association
| |
| ** | NWDA | Northwest Digital Archives
| |
| ** | NWDA | Northwestern Wisconsin Dietetic Association
| |
| ** | NWDA | National Wholesale Druggists Association
| |
| ** | NWDA | North Woods Dressage Association
| |
| ** | NWDA | Nebraska Well Drillers Association
| |
| * | NWDA | Narmada Water Disputes Authority
| |
| * | NWDA | National Window Door Association
| |
| * | NWDA | North Wales Deaf Association
| |
| * | NWDA | National Wolf Dog Alliance
| |
| * | NWDA | North Whidbey Dart Association
| |
| * | NWDA | National Web Design Association
| |
| * | NWDA | North Warwickshire District Association
| |
| * | NWDA | Northwest Development Agency
| |
| * | NWDA | North Wales District Association
| |
| * | NWDA | North West Dance Alliance
| |
| * | NWDA | Northwind Management, Inc.
| |