All Other Professional, Scientific, and Technical Services

NAICS 541990

NAICS 541990 is a North American Industry Classification System code. Federal buyers use NAICS for market research, set-aside size standards, and reporting. Official titles come from the Census Bureau NAICS structure.

Official title: All Other Professional, Scientific, and Technical Services
Code level: 6
Parent industry: All Other Professional, Scientific, and Technical ServicesT 54199
Open opportunities: 172 open · 599 active

View live contracts Official source

Open opportunities in this industry

Professional

MAARNG HRF Supported Collective Training Exercise (SCTE) Support Services

DEPT OF DEFENSE · DEPT OF THE ARMY

Solicitation · Total Small Business Set-Aside (FAR 19.5) · NAICS 541990 · MA · Due Jul 15, 2026

Professional

TECOM Range and Training Area Management (RTAM) Support Services (Synopsis): M00264-26-R-0005

DEPT OF DEFENSE · DEPT OF THE NAVY

Presolicitation · Total Small Business Set-Aside (FAR 19.5) · NAICS 541990 · Due Jul 16, 2026

Professional

Sources Sought Notice � NHPA Archaeological & Architectural Surveys (Fort Campbell, KY)

DEPT OF DEFENSE · DEPT OF THE ARMY

Sources Sought · Total Small Business Set-Aside (FAR 19.5) · NAICS 541990 · KY · Due Jul 16, 2026

Professional

Onsite Integrated Supply Chain Management Support - Service Contract - F/A-18

DEPT OF DEFENSE · DEPT OF THE NAVY

Solicitation · NAICS 541990 · Due Jul 16, 2026

Professional

Notice of Intent to Award a Sole Source IDIQ Contract to Astrotech Space Operations LLC for payload processing services in support of SDA Transport Layer Tranche 2 (TLT2) launches

DEPT OF DEFENSE · DEPT OF THE AIR FORCE

Special Notice · NAICS 541990 · Due Jul 16, 2026

Professional

Maintenance/Calibration, Testing, and Recharging Services of Portable Fire Extinguishers

DEPT OF DEFENSE · DEFENSE HEALTH AGENCY (DHA)

Combined Synopsis/Solicitation · Total Small Business Set-Aside (FAR 19.5) · NAICS 541990 · GU · Due Jul 17, 2026

Nearby NAICS codes

All Other Professional, Scientific, and Technical ServicesT54199

Not legal advice. NAICS titles are official; opportunity counts are computed by GovGazette from SAM.gov bulk data.