| Acronym | Meaning |
| OASDI | Old-Age And Survivors Insurance And Disability Insurance |
| NASM | National Air And Space Museum |
| NGA | National Gallery Of Art; National Geospatial-Intelligence Agency |
| USAID | United States Agency For International Development |
| DCAA | Defense Contract Audit Agency |
| NASS | National Agricultural Statistics Service |
| NCID | National Center For Infectious Diseases |
| SLSDC | Saint Lawrence Seaway Development Corporation |
| TASC | Transportation Administrative Service Center |
| TSO | TRICARE Support Office |