| Harris Local Government Solutions Inc. | Niagara Falls | NY | $0 |
| Havish Associates Inc. | Ashburn | VA | Subcontractor |
| Hawktech LLC | Falls Church | VA | Subcontractor |
| Hayden Software Consulting, Inc. | Clarksville | MD | Subcontractor |
| HCH Enterprises LLC | Warwick | RI | $0 |
| HCL Global Systems, Inc. | Farmington Hills | MI | Subcontractor |
| HDF Group | Champaign | IL | Subcontractor |
| Headstream Inc. | Wilmington | DE | Subcontractor |
| Healthcare Technology Partners LLC | Naples | FL | Subcontractor |
| Health Information Technology Solutions LLC | Woodbridge | VA | Subcontractor |
| Health Innovation And Technology Venture LLC | Mclean | VA | $0 |
| Health Monitoring Systems, Inc. | Pittsburgh | PA | $0 |
| Hearst Business Publishing, Inc. | Troy | MI | $0 |
| Heflin Consulting LLC | Washington | DC | Subcontractor |
| Hellebore Consulting Group, LLC | Beavercreek | OH | Subcontractor |
| Henry Elliott & Co. Inc. | Wellesley | MA | Subcontractor |
| Herbert W Anderson | Truckee | CA | $0 |
| Hermitage Info Tech LLC | Piscataway | NJ | Subcontractor |
| Hess Systems Inc. | Porter Ranch | CA | Subcontractor |
| Hicks Consulting Group, Inc. | Walnut Creek | CA | Subcontractor |
| Hi-point Systems Inc. | Chantilly | VA | Subcontractor |
| Hk Consulting Inc. | Sandy | UT | Subcontractor |
| Holland Square Group, LLC | Brentwood | TN | Subcontractor |
| Holland Technologies Inc. | Baldwin City | KS | $0 |
| Holonic Technologies, Inc. | Tucson | AZ | Subcontractor |
| Hookbang LLC | Austin | TX | Subcontractor |
| Hopeforge LLC | Palmetto | FL | Subcontractor |
| Horizon 3 Ai, Inc. | San Francisco | CA | Subcontractor |
| Horizontal Integration, Inc. | St Louis Park | MN | Subcontractor |
| HPN Software Solutions LLC | Colorado Springs | CO | Subcontractor |
| HR Avatar, Inc. | Gainesville | VA | $0 |
| HRG Technologies LLC | Honolulu | HI | Subcontractor |
| HRS Systems, Inc. | Petersburg | TN | $0 |
| HTC Global Services Inc. | Troy | MI | $0 |
| Humetrix | Del Mar | CA | Subcontractor |
| Humulo Engineering LLC | Edgewater | MD | $0 |
| Hung Technology Solutions LLC | Parkville | MD | $0 |
| Hybrid Enterprises LLC | Saint Cloud | FL | Subcontractor |
| I5 Sharepoint Consulting, LLC | Bowie | MD | Subcontractor |
| I5 Tech Inc. | Edison | NJ | Subcontractor |
| Iamsolutions Va Inc. (used In Va By: Iamsolutions Inc.) | Sterling | VA | Subcontractor |
| Ibase Operations Corp. | Santa Clara | CA | Subcontractor |
| Iblaunch Company | Ashburn | VA | Subcontractor |
| Ibusiness Solution LLC | Mechanicsburg | PA | Subcontractor |
| Ic Data Communications, L.L.C. | Detroit | MI | $0 |
| Ice Its, Inc. | Ashburn | VA | Subcontractor |
| Icube Systems, Inc. | Clifton | VA | $0 |
| Identity Software Solutions LLC | Chantilly | VA | Subcontractor |
| Ideocell, Inc. | Wiscasset | ME | Subcontractor |
| Idm Solutions LLC | Bristol | RI | Subcontractor |
| Idmworks, LLC | Miami | FL | Subcontractor |
| Imagemovermd Inc. | Madison | WI | Subcontractor |
| Imaginestics LLC | West Lafayette | IN | $0 |
| Imperial Staffing LLC | Austin | TX | Subcontractor |
| Improving Chicago, LLC | Chicago | IL | Subcontractor |
| Improving Minnesota, LLC | Minneapolis | MN | Subcontractor |
| Ims-chas, Inc. | Saint George | SC | Subcontractor |
| Incept Data Solutions Inc. | Sterling | VA | Subcontractor |
| Incite Automation, LLC | Baltimore | MD | Subcontractor |
| Incorta, Inc. | Foster City | CA | Subcontractor |
| Independent Data Management, Inc. | Effingham | IL | Subcontractor |
| Industrial Logic, Inc. | Berkeley | CA | Subcontractor |
| Industrial Systems, Inc. | Vancouver | WA | $0 |
| Inficare Inc. | Sterling | VA | $0 |
| Infinite Dimensions Integration, Inc. | West Plains | MO | Subcontractor |
| Infobahn Solutions Inc. | Chantilly | VA | Subcontractor |
| Infodat International Inc. | Houston | TX | $0 |
| Infoexperts, Inc. | Richardson | TX | Subcontractor |
| Infolock Technologies, LLC | Arlington | VA | Subcontractor |
| Info-matrix Corp. | Mechanicsburg | PA | Subcontractor |
| Infomatrix Technologies, Inc. | Redondo Beach | CA | Subcontractor |
| Informated Software Solutions Corp. | Potomac | MD | $0 |
| Information Management Systems, Inc. | Madison | MS | $0 |
| Information Technology For Enterprises, LLC | Knoxville | TN | Subcontractor |
| Information Technology Solutions(its), LLC | Phoenix | MD | $0 |
| Informatix, Inc. | Sacramento | CA | $0 |
| Infospan Global LLC | Potomac | MD | Subcontractor |
| Infostellar Inc. | Manassas | VA | Subcontractor |
| Infrastructure Modernization Solutions LLC | Placitas | NM | Subcontractor |
| Ingersoll Consulting Inc. | Grand Junction | CO | Subcontractor |
| Ingersoll Consulting Information Solutions | Grand Junction | CO | Subcontractor |
| Innova Consulting LLC | Overland Park | KS | Subcontractor |
| Innovatis Technologies Inc. | Fairfax | VA | Subcontractor |
| Innovative Applied Sciences, LLC | Commack | NY | Subcontractor |
| Innovative Architects, LLC | Alpharetta | GA | Subcontractor |
| Innovative Ideas Unlimited, Inc. | Wakefield | MA | $0 |
| Innovative Networking And Communications Associates, Inc. | Accident | MD | Subcontractor |
| Innovative Object Solutions Inc. | Mc Lean | VA | Subcontractor |
| Innovativeone Technologies LLC | Bowie | MD | Subcontractor |
| Innovative Software Solutions LLC | Falls Church | VA | $0 |
| Inrix Inc. | Kirkland | WA | Subcontractor |
| Insight Designs Web Solutions, LLC | Boulder | CO | $0 |
| Instamation Systems Inc. | Eagle | ID | $0 |
| Institute For Disabilities Research And Training Inc. | Silver Spring | MD | $0 |
| Insystech, Inc. | Herndon | VA | $0 |
| Intech, Inc. | Melbourne | FL | Subcontractor |
| Integrate4it LLC | Dover | DE | $0 |
| Integrated Computer Solutions, Inc. | Waltham | MA | Subcontractor |
| Integrated Database And Software Solutions, L.L.C | Severna Park | MD | Subcontractor |
| Integrated Information Systems, Inc. | Louisville | KY | Subcontractor |
