Department of Defense NAICS 561990 contractors

All Other Support Services. Contractors in this NAICS lane under Department of Defense.

Agency: Department of Defense

Last updated: April 17, 2026

Visible recipients

Mapped obligations

$2,097,672,024

Visible recipients tied to Department of Defense and NAICS 561990

Bae Systems Global Combat Systems LTD

Barrow-in-furness, CUMBRIA

Barrow-in-furness, CUMBRIA | 5 awards | Top agency Department of Defense | NAICS 332420

$16,500,329

Cgi Federal Inc.

Fairfax, VA

Fairfax, VA | 1,056 awards | Top agency Department of State | NAICS 541512

$479,167,614

General Dynamics Land Systems Inc.

Sterling Heights, MI

Sterling Heights, MI | 819 awards | Top agency Department of Defense | NAICS 336992

$328,494,248

L3harris Technologies Integrated Systems L.p.

Greenville, TX

Greenville, TX | 403 awards | Top agency Department of Defense | NAICS 336413

$767,916,168

Del-jen, Inc.

Clarksville, TN

Clarksville, TN | 5 awards | Top agency Department of Defense | NAICS 561210

$23,096,927

Tatitlek Training Services, Inc.

Anchorage, AK

Anchorage, AK | 20 awards | Top agency Department of Defense | NAICS 561210

$63,884,382

Centerra Group, LLC

Herndon, VA

Herndon, VA | 143 awards | Top agency Department of Energy | NAICS 561612

$140,532,860

Chenega Global Protection, LLC

Chantilly, VA

Chantilly, VA | 371 awards | Top agency National Aeronautics and Space Administration | NAICS 561612

$135,686,817

Icf Consulting Group, Inc.

Reston, VA

Reston, VA | 5 awards | Top agency Office of Personnel Management | NAICS 611430

$40,171

Olgoonik Federal, LLC

Anchorage, AK

Anchorage, AK | 130 awards | Top agency Department of Defense | NAICS 493110

$73,308,921

Page 1 of 21 2 Next

Agency profile

Loading buyer-level contractor and category paths