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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

    4,811 total opportunities (4,811 active) tied to NAICS 541990 across federal, state, local, and forecast sources.
    NAICS 541990Federal + SLED4.8K total
    View NAICS definition →
    Total Opportunities
    4.8K
    Across all indexed sources
    Active Estimate
    4.8K
    Approximate active count
    Source Count
    3
    Federal, SLED, and forecast lanes

    Latest federal solicitations for NAICS 541990.

    DEPARTMENT OF COMMERCE

    R--26-482 SEFSC DEEP CORAL REEF MONITORING PROGRAM SU

    Active

    AI Summary

    The Department of Commerce's National Oceanic and Atmospheric Administration is seeking proposals for the SEFSC Deep Coral Reef Monitoring Program. This opportunity involves conducting surveys and monitoring of deep coral reefs, with a focus on environmental impacts and marine biology. Interested bidders should refer t…

    MO

    Posted Sep 15, 2026Due Sep 18, 2026Combined Synopsis/SolicitationNAICS 541990Total Small Business Set-Aside (FAR 19.5)Sol: 1333MF26Q0099
    View details→

    DEPARTMENT OF HEALTH AND HUMAN SERVICES

    R--SYNTHETIC MEMORIES NOI

    Active

    AI Summary

    The Department of Health and Human Services is seeking a service contract for a pilot study to evaluate the effectiveness of smell-related prompts in enhancing memory recall for individuals with early-stage dementia. This opportunity is part of a research initiative by the National Institutes of Health.

    MD

    Posted Sep 14, 2026Due Sep 18, 2026Special NoticeNAICS 541990Sol: 75N98026Q01210
    View details→

    DEPARTMENT OF TRANSPORTATION

    SURFACE TRANSPORTATION SYSTEMS ENGINEERING FOR ENABLING TECHNOLOGIES RESEARCH AND DEVELOPMENT

    Active

    AI Summary

    The U.S. Department of Transportation seeks to negotiate a single-award IDIQ contract for non-personal systems engineering development and research services. This opportunity focuses on evaluating emerging technologies to enhance safety and efficiency in surface transportation systems, including AI and cybersecurity.

    DC

    Posted Sep 14, 2026Due Oct 1, 2026Special NoticeNAICS 541990Sol: 693JJ326R000019
    View details→

    DEPARTMENT OF THE INTERIOR

    GRTE FIRE SUPPRESSION/PANEL INSPECTIONS

    Active

    AI Summary

    The National Park Service is soliciting proposals for the annual fire suppression system inspections and fire panel inspections at Grand Teton National Park. This includes necessary repairs for the year 2026. Interested bidders should prepare to meet the specific requirements outlined in the solicitation.

    WY

    Posted Sep 14, 2026Due Sep 23, 2026SolicitationNAICS 541990Total Small Business Set-Aside (FAR 19.5)Sol: 140P1426Q0099
    View details→

    DEPARTMENT OF TRANSPORTATION

    JUSTIFICATION FOR OTHER THAN FULL AND OPEN COMPETITION (JOFOC) FOR SYSTEM ARCHITECTURES FOR INTELLIGENT TRANSPORTATION STANDARDIZATION, DEPLOYMENT, AND EVOLUTION

    Archived

    AI Summary

    This notice provides the Justification for Other than Full and Open Competition to deliver System Architectures for Intelligent Transportation Standardization, Deployment, and Evolution for the Federal Highway Administration. The notice is posted as required by FAR 6.301(b), and a copy of the justification is attached.

    DC

    Posted Sep 14, 2026JustificationNAICS 541990Sol: 693JJ323F00273N
    View details→

    DEPARTMENT OF HEALTH AND HUMAN SERVICES

    NOTICE OF INTENT TO SOLE SOURCE – GUIDEHOUSE DIGITAL LLC - PEDIATRIC HOSPITALIST - SCIENTIFIC SUBJECT MATTER EXPERT

    Archived

    AI Summary

    This opportunity is a sole source bridge contract for Pediatric Hospitalist services by Guidehouse Digital LLC, aimed at ensuring continuity of care and regulatory compliance. The contractor's prior experience and credentialing allow for immediate service provision. This acquisition follows FAR Part 13 Simplified Acqui…

    MD

    Posted Sep 14, 2026PresolicitationNAICS 541990Sol: NOI-OD-26-010315
    View details→

    DEPT OF DEFENSE

    TECHNICAL COLLECTION AND COMMUNICATIONS FIELD SUPPORT AND TRAINING FOLLOW-ON

    Active

    AI Summary

    The United States Special Operations Command (USSOCOM) is seeking sources for technical collection and communications field support representatives and equipment trainers. This Sources Sought notice aims to assess industry capabilities and inform the government's acquisition strategy. Interested parties should respond …

    FL

    Posted Sep 14, 2026Due Sep 23, 2026Sources SoughtNAICS 541990Sol: TCCFSRFO
    View details→

    DEPARTMENT OF HEALTH AND HUMAN SERVICES

    SYSTEMATIC INFORMATION REVIEW

    Active

    AI Summary

    The CDC's NIOSH requires systematic information review and literature validation support services. This RFQ seeks a commercially available automated service to enhance literature review processes for occupational safety and health. The contract will be a Firm-Fixed-Price for 36 months. Quotes are due by September 14, 2…

    GA

    Posted Sep 14, 2026Due Sep 18, 2026Combined Synopsis/SolicitationNAICS 541990Total Small Business Set-Aside (FAR 19.5)Sol: 75D301-26-Q-79261
    View details→

    DEPARTMENT OF AGRICULTURE

    PURCHASE AND DELIVERY OF A CRITICAL FREEZE DRYER AND ACCESSORIES

    Active

    AI Summary

    This opportunity is for the purchase and delivery of a critical freeze dryer and accessories for the NEA Food Quality Laboratory in Maryland. The solicitation number is 12444026Q0221, and quotes are due by September 18, 2026, at 5 PM EDT. All responsible sources may submit a quotation.

    GA

    Posted Sep 11, 2026Due Sep 18, 2026Combined Synopsis/SolicitationNAICS 541990Sol: 12444026Q0221
    View details→

    DEPT OF DEFENSE

    ATLANTIC UNDERSEA TEST AND EVALUATION CENTER (AUTEC) PAY AND BENEFIT STUDY

    Active

    AI Summary

    The Naval Undersea Warfare Center Division intends to award a Firm Fixed Price purchase order for a Pay and Benefit study related to the AUTEC Maintenance and Operations contract. This study is essential for establishing a fair compensation package for personnel. The opportunity is a 100% small business set-aside and f…

    RI

    Posted Sep 11, 2026Due Sep 18, 2026Combined Synopsis/SolicitationNAICS 541990Total Small Business Set-Aside (FAR 19.5)Sol: N6660427Q0003
    View details→

    Source mix

    How this NAICS code is represented across indexed contract sources.

    federal
    4,384
    sled
    128
    forecast
    299

    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→
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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 →