| QART | Quality Assessment Reporting Tool (certificate error 1/23; older link archive) |
| QARTOD | Quality Assurance/Quality Control of Real-Time Oceanographic Data |
| QASS | Quality Assurance Operations |
| QCEW | Quarterly Census of Employment and Wages |
| QCLCD | Quality Controlled Local Climatological Data (unable to verify 8/21) |
| QCT | Qualified Census Tracts |
| QDDR | Quadrennial Diplomacy and Development Review (unable to verify 6/19) |
| QDR | National Healthcare Quality and Disparities Report |
| QDU | Questioned Documents Unit (changed to Questioned Documents; older link archive) |
| QER | Quadrennial Energy Review (unable to verify 12/20; older link archive1; archive2; archive3) |
| QFAHPD | Quarterly Food-at-Home Price Database |
| QFR | Quadrennial Fire Review | Quarterly Financial Report (older link archive) |
| QHP | Qualified Health Plan Survey |
| QHSR | Quadrennial Homeland Security Review |
| QICO2 | Quick Indoor CO2 Tool |
