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    1. Home
    2. /Gov Explore
    3. /NAICS Codes
    4. /541990

    NAICS Demand Lane

    All Other Professional, Scientific, and Technical Services, Contract Opportunities

    4,894 total opportunities (4,894 active) tied to NAICS 541990 across federal, state, local, and forecast sources.
    NAICS 541990Federal + SLED4.9K total
    View NAICS definition →
    Total Opportunities
    4.9K
    Across all indexed sources
    Active Estimate
    4.9K
    Approximate active count
    Source Count
    3
    Federal, SLED, and forecast lanes

    Latest federal solicitations for NAICS 541990.

    DEPT OF DEFENSE

    EMPLOYEE ASSISTANCE PROGRAM – HUMAN RESOURCES OFFICE (HRO)

    Active

    AI Summary

    The Army Human Resources Office seeks an employee assistance program serving employees throughout Illinois. The contractor must operate 24/7 toll-free and online intake, arrange referrals to qualified local providers within 60 miles of employee locations, provide up to five counseling or coaching sessions per issue at …

    IL

    Posted Nov 13, 2026Due Dec 14, 2026SolicitationNAICS 541990Total Small Business Set-Aside (FAR 19.5)Sol: W91SMC27RA001
    View details→

    DEPT OF DEFENSE

    AIR FORCE TECHNICAL AND ANALYTICAL SUPPORT AND PROFESSIONAL SERVICES (AFTAS PRO) CSO

    Active

    AI Summary

    The Air Force is seeking innovative commercial-service solutions to improve acquisition and program management support through artificial intelligence, automation, data interoperability, workflow improvements, and analytical efficiencies. This two-step Commercial Solutions Opening first requires white papers submitted …

    MD

    Posted Nov 13, 2026Due Nov 20, 2026SolicitationNAICS 541990SBA Certified Women-Owned Small Business (WOSB) Program Set-Aside (FAR 19.15)Sol: FA701427SC432
    View details→

    DEPT OF DEFENSE

    HYDROPOWER TECHNICAL RESEARCH & KNOWLEDGE EXCHANGE

    Active

    AI Summary

    USACE is conducting market research for a planned 2027 firm-fixed-price service contract supporting hydropower technical research and knowledge exchange. Work may include access to publications, research, technical exchanges, collaborative investigations, training, and conference or workshop forums, covering equipment,…

    OR

    Posted Nov 13, 2026Due Dec 3, 2026Sources SoughtNAICS 541990Sol: W9127N27QA010
    View details→

    DEPT OF DEFENSE

    MARINE RESOURCE TECHNICAL SERVICES THROUGHOUT THE NAVAL FACILITIES ENGINEERING SYSTEMS COMMAND (NAVFAC) PACIFIC AREA OF RESPONSIBILITY

    Active

    AI Summary

    NAVFAC Pacific is soliciting proposals for a multiple-award, firm-fixed-price IDIQ contract for marine resource technical services, primarily in Hawaii, Guam, and the Northern Mariana Islands, with potential worldwide work. Services include marine surveys and monitoring, ecological analysis, habitat restoration, enviro…

    HI

    Posted Nov 13, 2026Due Dec 8, 2026SolicitationNAICS 541990Partial Small Business Set-Aside (FAR 19.5)Sol: N6274227R1801
    View details→

    DEPT OF DEFENSE

    CLEANING, INSPECTION, AND HAZARDOUS WASTE REMOVAL FOR TWO 10,000-GALLON OIL/WATER SEPARATORS

    Active

    AI Summary

    The Air Force is seeking quotes from small businesses to pump, clean, and inspect two 10,000-gallon underground oil-water separators at the 934th Airlift Wing in Minneapolis. The contractor must provide all labor, equipment, and materials, with separate line items for non-hazardous waste disposal and optional hazardous…

    MN

    Posted Nov 13, 2026Due Nov 17, 2026Combined Synopsis/SolicitationNAICS 541990Total Small Business Set-Aside (FAR 19.5)Sol: FA663327QA001
    View details→

    DEPARTMENT OF HOMELAND SECURITY

    US COAST GUARD NSFCC CONFINED SPACE TRAINING

    Active

    AI Summary

    The Coast Guard seeks a small-business contractor to deliver confined-space entry and rescue training, including materials, equipment, and a final skills exercise, for National Strike Force personnel. The work includes three course convenings at Coast Guard facilities in Fort Dix, New Jersey; Mobile, Alabama; and Novat…

    NC

    Posted Nov 13, 2026Due Nov 29, 2026Combined Synopsis/SolicitationNAICS 541990Total Small Business Set-Aside (FAR 19.5)Sol: 34359RFQ270000002
    View details→

    DEPARTMENT OF TRANSPORTATION

    REQUEST FOR QUOTATION (RFQ) NATIONAL PERFORMANCE MANAGEMENT RESEARCH DATA SET (NPMRDS) TECHNICAL AND DATA-SHARING SUPPORT

    Active

    AI Summary

    FHWA seeks access to timely, quality National Performance Management Research Data Set (NPMRDS) travel-time data covering the National Highway System, along with technical and data-sharing support. The effort will support federal, state, and local agencies conducting transportation performance management applications a…

    DC

    Posted Nov 13, 2026Due Nov 16, 2026Combined Synopsis/SolicitationNAICS 541990No Set aside usedSol: 693JJ327Q000001
    View details→

    DEPT OF DEFENSE

    FORT CAMPBELL, KY - API 653 EXTERNAL TANK INSPECTION

    Active

    AI Summary

    The Army is soliciting quotes for an API 653 external inspection of fuel tanks at Fort Campbell, Kentucky. This is a service solicitation set aside for service-disabled veteran-owned small businesses. The solicitation was amended to update clauses and the performance work statement and to provide answers to vendor ques…

    NE

    Posted Nov 12, 2026Due Nov 18, 2026SolicitationNAICS 541990Service-Disabled Veteran-Owned Small Business (SDVOSB) Set-Aside (FAR 19.14)Sol: W9128F27QA006
    View details→

    NATIONAL ARCHIVES AND RECORDS ADMINISTRATION

    ARTIFACT CONSERVATION PROJECT COORDINATOR

    Active

    AI Summary

    NARA seeks a project coordinator to support a team managing a three-year initiative involving multiple conservation projects at its Presidential Libraries and Museums. Work will follow the attached statement of work. The solicitation is an RFQ and has been amended to revise the CLIN and evaluation structures, update te…

    MD

    Posted Nov 12, 2026Due Nov 19, 2026SolicitationNAICS 541990Total Small Business Set-Aside (FAR 19.5)Sol: 88310327Q00012
    View details→

    DEPARTMENT OF HEALTH AND HUMAN SERVICES

    FDA SCIENTIFIC & REGULATORY SUPPORT SERVICES(SRS)

    Active

    AI Summary

    The FDA is conducting market research for a potential Scientific and Regulatory Support Services IDIQ; this notice is not a solicitation and requests no proposals. Anticipated services include scientific research and regulatory review, clinical and nonclinical data analysis, epidemiology, biostatistics, pharmacovigilan…

    MD

    Posted Nov 12, 2026Due Nov 23, 2026Sources SoughtNAICS 541990Total Small Business Set-Aside (FAR 19.5)Sol: 75F40127R00007
    View details→

    Source mix

    How this NAICS code is represented across indexed contract sources.

    federal
    4,421
    sled
    230
    forecast
    243

    Related NAICS Codes

    • 54, Professional, Scientific, and Technical Services→
    • 541, Professional, Scientific, and Technical Services→
    • 5411, Legal Services→
    • 54111, Offices of Lawyers→
    • 541110, Offices of Lawyers→
    • 54112, Offices of Notaries→
    • 541120, Offices of Notaries→
    • 54119, Other Legal Services→
    • 541191, Title Abstract and Settlement Offices→
    • 541199, All Other Legal Services→

    Explore

    • 541990 Definition→
    • Browse NAICS Codes→
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    About NAICS 541990

    This industry comprises establishments primarily engaged in providing professional, scientific, and technical services not classified in other specific industries. These services include a variety of specialized consulting and advisory services.

    Read the full NAICS definition →