| Calibre Systems INC | Professional, Scientific, and Technical Services | $10,000,000 | $10,114,444 | 500 | $51.8M |  Research |
| Goodwin House Incorporated | Health Care and Social Assistance | $9,520,031 | $9,579,267 | 500 | $85.1M | Research |
| Pro-Sphere Tek INC | Professional, Scientific, and Technical Services | $7,363,986 | $0 | 404 | $83.5M | Research |
| Oblon, Mcclelland, Maier & Neustadt, L.l.p. | Professional, Scientific, and Technical Services | $6,515,300 | $6,588,843 | 314 | $76.3M | Research |
| Abc Imaging of Washington, Inc. | Manufacturing | $6,030,235 | $5,764,469 | 463 | $459.2M | Research |
| Rand Construction Corporation | Construction | $5,052,867 | $5,135,711 | 256 | $291.7M | Research |
| Priority One Services, Inc. | Professional, Scientific, and Technical Services | $4,906,700 | $5,082,862 | 460 | $47.6M | Research |
| United Way Worldwide | Other Services (except Public Administration) | $4,841,490 | $4,901,179 | 250 | N/A | Research |
| Geologics Corporation | Professional, Scientific, and Technical Services | $4,758,200 | $1,614,721 | 241 | $50.1M | Research |
| Culmen International, LLC | Administrative and Support and Waste Management | $4,684,200 | $4,738,979 | 260 | $38.1M | Research |
| Metro Systems Incorporated | Professional, Scientific, and Technical Services | $4,150,400 | $4,194,786 | 326 | $33.7M | Research |
| Av Automotive LLC | Retail Trade | $4,135,500 | $4,181,220 | 301 | $75.9M | Research |
| J.r. Reingold & Associates, Inc. | Professional, Scientific, and Technical Services | $3,996,690 | $4,049,759 | 225 | $23.3M | Research |
| National Industries for the Blind | Health Care and Social Assistance | $3,989,000 | $4,044,292 | 175 | $28.4M | Research |
| Potomacwave Consulting, Inc. | Professional, Scientific, and Technical Services | $3,893,800 | $3,939,352 | 219 | $22.7M | Research |
| Nm Management, Inc. | Real Estate and Rental and Leasing | $3,880,035 | $1,080,824 | 333 | $48.3M | Research |
| Advantage Sci, LLC | Professional, Scientific, and Technical Services | $3,738,100 | $3,793,096 | 325 | $33.6M | Research |
| Alexandria Motor Cars, Inc. | Retail Trade | $3,443,000 | $3,482,146 | 234 | $59.0M | Research |
| Association for Supervision and Curriculum Development | Educational Services | $3,258,600 | $2,914,608 | 125 | N/A | Research |
| Quality Support, INC | Administrative and Support and Waste Management | $3,123,600 | $3,160,476 | 198 | $37.5M | Research |
| E-9 Corporation | Professional, Scientific, and Technical Services | $2,862,700 | $1,659,500 | 99 | $13.9M | Research |
| American Society for Training and Development Incorporated | Other Services (except Public Administration) | $2,777,790 | $2,808,688 | 154 | $29.4M | Research |
| Oliff Plc | Professional, Scientific, and Technical Services | $2,607,128 | $2,635,734 | 137 | $33.3M | Research |
| Verisma Systems, INC | Administrative and Support and Waste Management | $2,565,300 | $2,594,160 | 270 | $51.1M | Research |
| International Association of Chiefs of Police | Other Services (except Public Administration) | $2,544,202 | $2,573,269 | 133 | N/A | Research |