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Department of Defense NAICS 541611 contractors

Administrative Management and General Management Consulting Services. Contractors in this NAICS lane under Department of Defense.

Agency: Department of Defense

Last updated: April 19, 2026

Visible recipients

233

Mapped obligations

$48,903,244,365

Visible recipients tied to Department of Defense and NAICS 541611

Avantus Federal LLC

Mc Lean, VA

Mc Lean, VA | 95 awards | Top agency Department of Defense | NAICS 541330

$274,302,729

International Sos Government Services LLC

San Antonio, TX

San Antonio, TX | 61 awards | Top agency Department of Defense | NAICS 524114

$942,388

Veterans Ez Info Inc.

San Diego, CA

San Diego, CA | 38 awards | Top agency Department of Veterans Affairs | NAICS 541512

$2,500

Guidehouse LLP

Mc Lean, VA

Mc Lean, VA | 134 awards | Top agency Department of State | NAICS 541611

$1,830,311,801

Tista Science And Technology Corporation

Rockville, MD

Rockville, MD | 37 awards | Top agency Department of Veterans Affairs | NAICS 541512

$21,124,517

Chickasaw Advisory Services, LLC

Norman, OK

Norman, OK | 5 awards | Top agency Department of Health and Human Services | NAICS 541519

$20,069,179

Visionary Integration Professionals LLC

Folsom, CA

Folsom, CA | 15 awards | Top agency Department of Homeland Security | NAICS 541512

$3,890,973

Sev1tech, LLC

Woodbridge, VA

Woodbridge, VA | 225 awards | Top agency Department of Defense | NAICS 541712

$84,450,884

Tetra Tech, Inc.

Pasadena, CA

Pasadena, CA | 260 awards | Top agency Department of Defense | NAICS 541330

$158,362,336

Esimplicity INC

Silver Spring, MD

Silver Spring, MD | 101 awards | Top agency Department of Health and Human Services | NAICS 541512

$160,103

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