Department of Defense NAICS 541990 contractors

All Other Professional, Scientific, and Technical Services. Contractors in this NAICS lane under Department of Defense.

Agency: Department of Defense

Last updated: April 19, 2026

Visible recipients

143

Mapped obligations

$21,850,205,145

Visible recipients tied to Department of Defense and NAICS 541990

Koniag Technology Solutions INC

Anchorage, AK

Anchorage, AK | 28 awards | Top agency Social Security Administration | NAICS 541511

$13,948,048

Venesco LLC

Chantilly, VA

Chantilly, VA | 64 awards | Top agency Department of Defense | NAICS 541330

$34,824,215

West 4th Strategy, LLC

Mc Lean, VA

Mc Lean, VA | 90 awards | Top agency Department of Justice | NAICS 541611

$150,726

Amentum Environment & Energy, Inc.

Aiken, SC

Aiken, SC | 37 awards | Top agency Department of Energy | NAICS 541712

$37,098,500

Solutions Through Innovative Technologies INC

Fairborn, OH

Fairborn, OH | 72 awards | Top agency Department of Defense | NAICS 541330

$27,763,831

Ahtna Logistics, LLC

Anchorage, AK

Anchorage, AK | 30 awards | Top agency Department of Defense | NAICS 493190

$10,673,272

Kratos Defense & Rocket Support Services, Inc.

San Diego, CA

San Diego, CA | 38 awards | Top agency Department of Defense | NAICS 541330

$11,316,247

Insight Policy Research, Inc.

Arlington, VA

Arlington, VA | 23 awards | Top agency Department of Health and Human Services | NAICS 541611

$5,873,185

Calspan Corporation

Buffalo, NY

Buffalo, NY | 5 awards | Top agency Small Business Administration | NAICS 541380

$347,717

National Institute Of Aerospace Associates

Hampton, VA

Hampton, VA | 26 awards | Top agency National Aeronautics and Space Administration | NAICS 541712

$1,209,649

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