NTSO
| 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 |