| Acronym | Meaning |
 | NASM | National Air And Space Museum |
| NGA | National Gallery Of Art; National Geospatial-Intelligence Agency |
| NFA | National Fire Academy |
| OSM | Office Of Surface Mining; Office Of Spectrum Management |
| NETL | National Energy Technology Laboratory |
| EOWS | Executive Office Of Weed And Seed |
| RBS | Rural Business-Cooperative Service |
| CCB | Child Care Bureau |
| NGDC | National Geophysical Data Center |
| NESDIS | National Environmental Satellite |
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