| Acronym | Definition |
|---|
| NTSO➣NASA (National Aeronautics and Space Administration) Test Support Office |
| NTSO➣Non-Traditional Student Organization (various locations) |
| NTSO➣NASA Test Support Office (National Aeronautics and Space Administration) |
| NTSO➣National Taiwan Symphony Orchestra (est. 1945; Taiwan) |
| NTSO➣New Town Swing Orchestra (Germany) |
| NTSO➣New Texas Symphony Orchestra (Dallas, Texas) |
| NTSO➣National Television Station Ownership Rule |
| NTSO➣Nevada Test Site Office |
| NTSO➣North Texas Sports Officials |