| JNLWP |
Joint Non-Lethal Weapons Directorate |
| JOAP |
Joint Oil Analysis Program (unable to verify, 11/12) |
| JOAP-TSC |
Joint Oil Analysis Program Technical Support Center (unable to verify, 11/12) |
| JOLI |
Job Opportunities for Low-Income Individuals Program (earlier link archive) |
| JOLTS |
Job Openings and Labor Turnover Survey |
| JPATS |
Justice Prisoner and Alien Transportation System |
| JPDO |
Joint Planning and Development Office (unable to verify 11/14) |
| JPL |
Jet Propulsion Laboratory |
| JPML |
United States Judicial Panel on Multidistrict Litigation |
| JPSS |
Joint Polar Satellite System |
| JRI |
Justice Reinvestment Initiative |
| JRJ |
John R. Justice Program |
| JRRD |
Journal of Rehabilitation Research & Development |
| JRU |
Justice Resource Update |
| JSC |
Johnson Space Center |
| JSD |
Judicial Security Division |
| JTTF |
Joint Terrorism Task Forces, FBI | Joint Terrorism Task Force, ICE |
| JUSFC |
Japan-United States Friendship Commission |
| JWC |
U.S.-Mexico Joint Working Committee on Transportation Planning |
| JWOD |
Javits-Wagner-O'Day Program (changed to CPPBSD) |
| JWST |
James Webb Space Telescope |
| KAP |
Knowledge Application Program |
| KID |
Kids' Inpatient Database |
| KMWG |
Federal Knowledge Management Working Group |
| KRND |
Kidney Research National Dialogue (older link archive; archive2) |
| KSC |
Kennedy Space Center |
| KUH |
Division of Kidney, Urologic, and Hematologic Diseases |