| Term | Full Form | Category |
|---|---|---|
| NTGA | Anaa, French Polynesia | Others |
| NTGA | National Tourist Guide Association | Others |
| NTGA | Ngati Tuwharetoa Geothermal Assets | Others |
| NTGA | North Texas Genealogical Association | Others |
| NTGA | North Texas Guyanese Association | Others |
| NTGA | North Toronto Group of Artists | Others |
| NTGA | Northamptonshire Trampoline Gymnastics Academy | Others |
| NTGA | Northants Trampoline Gymnastics Academy | Others |
| NTGA | Northern Trust Global Advisors | Others |