| Acronym | Definition |
|---|
| NSTA➣National Science Teachers Association |
| NSTA➣National School Transportation Association |
| NSTA➣National Spasmodic Torticollis Association |
| NSTA➣National Substitute Teachers Alliance (Fresno, California) |
| NSTA➣National Science and Technology Authority |
| NSTA➣National Safe Transit Association |
| NSTA➣National Science and Technology Awards |
| NSTA➣National Security Training Academy |
| NSTA➣National Space & Technology Association (Houston, TX) |
| NSTA➣Nebraska State Taxidermists Association |
| NSTA➣North Shore Times Advertiser (New Zealand newspaper) |
| NSTA➣Nova Scotia Tennis Association |
| NSTA➣Nippon Steel Trading America (Japan) |
| NSTA➣Northern and Southern Taxi Association (South Africa) |