| Acronym | Definition |
|---|
| NGAO➣Next Generation Adaptive Optics (various organizations) |
| NGAO➣North Georgia Astronomical Observatory |
| NGAO➣National Government Audit Office (Philippines) |
| NGAO➣Northern Gulf Affairs Office (est. 2003; formerly Office of Special Plans) |
| NGAO➣Neuraminidase plus Galactose Oxidase |