Top 25 NASA Contractors
Total Purchases: $10,673,314,229
| Rank | Parent Company | Amount | Market Share |
| 1 | Lockheed Martin Corp. | $1,847,655,852 | 17.31% |
| 2 | California Institute of Technology | 1,739,322,998 | 16.29 |
| 3 | Boeing Co. | 1,293,769,670 | 12.12 |
| 4 | Jacobs Engineering Group Inc. | 459,954,820 | 4.30 |
| 5 | SAIC | 337,139,186 | 3.15 |
| 6 | Alliant Techsystems Inc. | 315,124,053 | 2.95 |
| 7 | United Technologies Corp. | 291,132,604 | 2.72 |
| 8 | Northrop Grumman Corp. | 247,755,508 | 2.32 |
| 9 | Honeywell Inc. | 211,404,426 | 1.98 |
| 10 | Computer Sciences Corp. | 142,243,661 | 1.33 |
| 11 | SGT Inc. | 103,226,430 | 0.96 |
| 12 | ITT Corp. | 100,607,085 | 0.94 |
| 13 | Raytheon Co. | 95,811,306 | 0.89 |
| 14 | Wyle Laboratories Inc. | 94,195,700 | 0.88 |
| 15 | Arctic Slope Regional Corp. | 92,688,085 | 0.86 |
| 16 | Government of Russia | 84,401,876 | 0.79 |
| 17 | G4S PLC | 83,896,811 | 0.78 |
| 18 | Ball Corp. | 83,078,392 | 0.77 |
| 19 | University of California System | 60,470,641 | 0.56 |
| 20 | Johns Hopkins University | 58,416,709 | 0.54 |
| 21 | Perot Systems Corp. | 56,356,130 | 0.52 |
| 22 | Muniz Engineering Inc. | 54,848,148 | 0.51 |
| 23 | Indyne Inc. | 53,513,366 | 0.50 |
| 24 | University of Arizona System | 50,729,764 | 0.47 |
| 25 | Southwest Research Institute | 49,216,832 | 0.46 |
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