| 2024-10-01 | Department Of Energy | awarded_contract | CENTRAL PLATEAU CLEANUP COMPANY, LLC | $944,303,519 | usaspending |
| 2026-02-10 | Department Of Homeland Security | awarded_contract | DAVIE DEFENSE INC. | $957,006,922 | usaspending |
| 2025-04-01 | Department Of Veterans Affairs | awarded_contract | DELL FEDERAL SYSTEMS L.P | $1,027,810,615 | usaspending |
| 2018-01-02 | National Aeronautics And Space Administration | awarded_contract | KBR WYLE SERVICES, LLC | $1,050,285,788 | usaspending |
| 2022-09-06 | General Services Administration | awarded_contract | BOOZ ALLEN HAMILTON INC | $1,095,077,979 | usaspending |
| 2006-12-04 | Department Of Energy | awarded_contract | IOWA STATE UNIVERSITY OF SCIENCE AND TECHNOLOGY | $1,105,569,782 | usaspending |
| 2020-11-30 | General Services Administration | awarded_contract | SCIENCE APPLICATIONS INTERNATIONAL CORPORATION | $1,138,581,054 | usaspending |
| 2021-02-01 | General Services Administration | awarded_contract | MAGELLAN FEDERAL, INC. | $1,178,619,385 | usaspending |
| 2012-10-01 | National Aeronautics And Space Administration | awarded_contract | THE BOEING COMPANY | $1,260,236,376 | usaspending |
| 2017-09-27 | Department Of Health And Human Services | awarded_contract | BAVARIAN NORDIC A/S | $1,264,240,981 | usaspending |
| 2020-09-30 | Department Of Veterans Affairs | awarded_contract | AT&T ENTERPRISES, LLC | $1,271,415,082 | usaspending |
| 2025-02-24 | Department Of Energy | awarded_contract | HANFORD TANK WASTE OPERATIONS & CLOSURE, LLC | $1,390,702,409 | usaspending |
| 2022-06-30 | Department Of Homeland Security | awarded_contract | AUSTAL USA, LLC | $1,401,235,590 | usaspending |
| 2026-02-11 | Department Of Homeland Security | awarded_contract | AMI METALS, INC | $1,474,828,686 | usaspending |
| 2019-10-01 | National Aeronautics And Space Administration | awarded_contract | PERATON INC. | $1,487,606,172 | usaspending |
| 2018-05-17 | Department Of Veterans Affairs | awarded_contract | ORACLE HEALTH GOVERNMENT SERVICES, INC. | $1,496,628,663 | usaspending |
| 2003-10-01 | National Aeronautics And Space Administration | awarded_contract | ASSOCIATION OF UNIVERSITIES FOR RESEARCH IN ASTRONOMY, INC. | $1,500,047,143 | usaspending |
| 2019-06-19 | Department Of State | awarded_contract | GENERAL DYNAMICS INFORMATION TECHNOLOGY, INC. | $1,513,400,214 | usaspending |
| 2023-10-01 | Department Of Energy | awarded_contract | IDAHO ENVIRONMENTAL COALITION LLC | $1,542,623,570 | usaspending |
| 2008-07-25 | Department Of Transportation | awarded_contract | HARRIS CORPORATION | $1,558,733,555 | usaspending |
| 2021-02-16 | Department Of Energy | awarded_contract | BATTELLE SAVANNAH RIVER ALLIANCE, LLC | $1,580,572,858 | usaspending |
| 2026-04-24 | Department Of Homeland Security | awarded_contract | BARNARD CONSTRUCTION COMPANY, INCORPORATED | $1,585,324,926 | usaspending |
| 2022-04-01 | Department Of Veterans Affairs | awarded_contract | DELL FEDERAL SYSTEMS L.P | $1,590,136,262 | usaspending |
| 2025-12-17 | Department Of Homeland Security | awarded_contract | FISHER SAND & GRAVEL CO | $1,600,999,612 | usaspending |
| 2021-08-16 | Department Of Energy | awarded_contract | CENTRAL PLATEAU CLEANUP COMPANY, LLC | $1,701,793,005 | usaspending |
| 2026-05-11 | Department Of Homeland Security | awarded_contract | SOUTHWEST VALLEY CONSTRUCTORS CO | $1,720,040,000 | usaspending |
| 2023-05-18 | National Aeronautics And Space Administration | awarded_contract | BLUE ORIGIN MANUFACTURING, LLC | $1,738,397,726 | usaspending |
| 2021-07-01 | Department Of Transportation | awarded_contract | HARRIS CORPORATION | $2,062,875,845 | usaspending |
| 2009-01-31 | Department Of Energy | awarded_contract | THE TRUSTEES OF PRINCETON UNIVERSITY | $2,126,044,005 | usaspending |
| 2024-09-30 | Department Of Energy | awarded_contract | FERMI FORWARD DISCOVERY GROUP, LLC | $2,381,419,816 | usaspending |
| 2023-05-17 | Department Of Energy | awarded_contract | UNITED CLEANUP OAK RIDGE LLC | $2,409,158,908 | usaspending |
| 2023-10-01 | Department Of Energy | awarded_contract | SAVANNAH RIVER MISSION COMPLETION, LLC | $2,428,532,956 | usaspending |
| 2019-10-16 | National Aeronautics And Space Administration | awarded_contract | THE BOEING COMPANY | $2,461,579,189 | usaspending |
| 2016-03-10 | Department Of Energy | awarded_contract | OAK RIDGE ASSOCIATED UNIVERSITIES, INCORPORATED | $3,038,492,500 | usaspending |
| 2015-11-01 | National Aeronautics And Space Administration | awarded_contract | AEROJET ROCKETDYNE OF DE, INC | $3,239,676,487 | usaspending |
| 2006-04-17 | Department Of Energy | awarded_contract | JEFFERSON SCIENCE ASSOCIATES, LLC | $3,282,976,341 | usaspending |
| 2024-06-13 | Department Of Energy | awarded_contract | PANTEXAS DETERRENCE, LLC | $3,517,043,101 | usaspending |
| 2010-08-16 | Department Of Energy | awarded_contract | FLUOR-BWXT PORTSMOUTH LLC | $4,465,488,591 | usaspending |
| 2017-08-01 | Department Of Energy | awarded_contract | MISSION SUPPORT & TEST SERVICES LLC | $7,577,227,068 | usaspending |
| 2015-01-05 | Department Of Energy | awarded_contract | BROOKHAVEN SCIENCE ASSOCIATES LLC | $8,505,704,689 | usaspending |
| 2007-09-01 | National Aeronautics And Space Administration | awarded_contract | THE BOEING COMPANY | $10,477,704,426 | usaspending |
| 2008-07-29 | Department Of Energy | awarded_contract | ALLIANCE FOR ENERGY INNOVATION, LLC | $10,683,511,618 | usaspending |
| 2018-07-12 | Department Of Energy | awarded_contract | FLUOR MARINE PROPULSION, LLC | $14,774,555,215 | usaspending |
| 1978-11-20 | Department Of Energy | awarded_contract | THE LELAND STANFORD JUNIOR UNIVERSITY | $14,860,934,880 | usaspending |
| 2006-09-06 | National Aeronautics And Space Administration | awarded_contract | LOCKHEED MARTIN CORP | $15,530,973,335 | usaspending |
| 2006-07-31 | Department Of Energy | awarded_contract | UCHICAGO ARGONNE, LLC | $17,277,738,534 | usaspending |
| 2015-07-09 | Department Of Energy | awarded_contract | HONEYWELL FEDERAL MANUFACTURING & TECHNOLOGIES, LLC | $17,385,377,663 | usaspending |
| 1993-11-15 | National Aeronautics And Space Administration | awarded_contract | THE BOEING COMPANY | $22,405,025,934 | usaspending |
| 2004-11-09 | Department Of Energy | awarded_contract | BATTELLE ENERGY ALLIANCE, LLC | $25,680,438,713 | usaspending |
| 2008-01-10 | Department Of Energy | awarded_contract | SAVANNAH RIVER NUCLEAR SOLUTIONS LLC | $27,154,619,520 | usaspending |
| 2005-12-21 | Department Of Energy | awarded_contract | LOS ALAMOS NATIONAL SECURITY LLC | $27,422,768,631 | usaspending |
| 1978-09-15 | Department Of Energy | awarded_contract | BATTELLE MEMORIAL INSTITUTE | $30,369,205,683 | usaspending |
| 2013-01-08 | Department Of Energy | awarded_contract | CONSOLIDATED NUCLEAR SECURITY, LLC | $34,009,652,495 | usaspending |
| 2018-06-08 | Department Of Energy | awarded_contract | TRIAD NATIONAL SECURITY, LLC | $35,035,280,267 | usaspending |
| 1978-09-30 | Department Of Energy | awarded_contract | REGENTS OF THE UNIVERSITY OF CALIFORNIA, THE | $35,295,689,219 | usaspending |
| 2007-05-09 | Department Of Energy | awarded_contract | LAWRENCE LIVERMORE NATIONAL SECURITY, LLC | $40,927,152,397 | usaspending |
| 1999-10-15 | Department Of Energy | awarded_contract | UT-BATTELLE LLC | $41,398,021,317 | usaspending |
| 2017-01-18 | Department Of Energy | awarded_contract | NATIONAL TECHNOLOGY & ENGINEERING SOLUTIONS OF SANDIA, LLC | $42,111,665,692 | usaspending |