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NAICS 813910 · Business Associations

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Business association in Lake Oswego, OR

31 business association in Lake Oswego, OR; 576 within 30 miles. Every listing checked against the issuer's record, in the published order.

  1. American Society for Dental Ethics

    Active501(c)(6) business league

    Lake Oswego, OR

    Ask it
    Proof for American Society for Dental Ethics
    IRS exempt-organization registration
    IRS 550743705
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(6) business league
    Checked
    Oct 23, 2026
    Where
    Lake Oswego, OR · serves Oregon
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 550743705 → IRS search

  2. Association of Vascular & Interventional Radiographers

    Active501(c)(6) business league

    Lake Oswego, OR

    Ask it
    Proof for Association of Vascular & Interventional Radiographers
    IRS exempt-organization registration
    IRS 411629594
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(6) business league
    Checked
    Oct 23, 2026
    Where
    Lake Oswego, OR · serves Oregon
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 411629594 → IRS search

  3. Clackamas County Business Alliance

    Active501(c)(6) business league

    Lake Oswego, OR

    Ask it
    Proof for Clackamas County Business Alliance
    IRS exempt-organization registration
    IRS 800016065
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(6) business league
    Checked
    Oct 23, 2026
    Where
    Lake Oswego, OR · serves Oregon
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 800016065 → IRS search

  4. Delta Kappa Gamma Society

    Active501(c)(6) business league

    Lake Oswego, OR

    Ask it
    Proof for Delta Kappa Gamma Society
    IRS exempt-organization registration
    IRS 930740849
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(6) business league
    Checked
    Oct 23, 2026
    Where
    Lake Oswego, OR · serves Oregon
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 930740849 → IRS search

  5. Eastern Vascular Society Inc

    Active501(c)(6) business league

    Lake Oswego, OR

    Ask it
    Proof for Eastern Vascular Society Inc
    IRS exempt-organization registration
    IRS 222945114
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(6) business league
    Checked
    Oct 23, 2026
    Where
    Lake Oswego, OR · serves Oregon
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 222945114 → IRS search

  6. Greater Lake Oswego Chamber of Commerce

    Active501(c)(6) business league

    Lake Oswego, OR

    Ask it
    Proof for Greater Lake Oswego Chamber of Commerce
    IRS exempt-organization registration
    IRS 930515970
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(6) business league
    Checked
    Oct 23, 2026
    Where
    Lake Oswego, OR · serves Oregon
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 930515970 → IRS search

  7. Home Builders Assn of Metropolitan Portland

    Active501(c)(6) business league

    Lake Oswego, OR

    Ask it
    Proof for Home Builders Assn of Metropolitan Portland
    IRS exempt-organization registration
    IRS 930256955
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(6) business league
    Checked
    Oct 23, 2026
    Where
    Lake Oswego, OR · serves Oregon
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 930256955 → IRS search

  8. Northwest Environmental Business Council

    Active501(c)(6) business league

    Lake Oswego, OR

    Ask it
    Proof for Northwest Environmental Business Council
    IRS exempt-organization registration
    IRS 911802037
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(6) business league
    Checked
    Oct 23, 2026
    Where
    Lake Oswego, OR · serves Oregon
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 911802037 → IRS search

  9. Northwest Grocery Association

    Active501(c)(6) business league

    Lake Oswego, OR

    Ask it
    Proof for Northwest Grocery Association
    IRS exempt-organization registration
    IRS 930792490
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(6) business league
    Checked
    Oct 23, 2026
    Where
    Lake Oswego, OR · serves Oregon
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 930792490 → IRS search

  10. Northwest Kidney Council

    Active501(c)(6) business league

    Lake Oswego, OR

    Ask it
    Proof for Northwest Kidney Council
    IRS exempt-organization registration
    IRS 843878188
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(6) business league
    Checked
    Oct 23, 2026
    Where
    Lake Oswego, OR · serves Oregon
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 843878188 → IRS search

  11. Northwest Small Hydroelectric Association

    Active501(c)(6) business league

    Lake Oswego, OR

    Ask it
    Proof for Northwest Small Hydroelectric Association
    IRS exempt-organization registration
    IRS 930805859
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(6) business league
    Checked
    Oct 23, 2026
    Where
    Lake Oswego, OR · serves Oregon
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 930805859 → IRS search

  12. Oregon Academy of Ophthalmology

    Active501(c)(6) business league

    Lake Oswego, OR

    Ask it
    Proof for Oregon Academy of Ophthalmology
    IRS exempt-organization registration
    IRS 930691877
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(6) business league
    Checked
    Oct 23, 2026
    Where
    Lake Oswego, OR · serves Oregon
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 930691877 → IRS search

  13. Oregon Association of Orthopaedists Inc

    Active501(c)(6) business league

    Lake Oswego, OR

    Ask it
    Proof for Oregon Association of Orthopaedists Inc
    IRS exempt-organization registration
    IRS 943130225
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(6) business league
    Checked
    Oct 23, 2026
    Where
    Lake Oswego, OR · serves Oregon
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 943130225 → IRS search

  14. Oregon Automatic Fire Alarm Association Inc

    Active501(c)(6) business league

    Lake Oswego, OR

    Ask it
    Proof for Oregon Automatic Fire Alarm Association Inc
    IRS exempt-organization registration
    IRS 931290613
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(6) business league
    Checked
    Oct 23, 2026
    Where
    Lake Oswego, OR · serves Oregon
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 931290613 → IRS search

  15. Oregon Aviation Industries

    Active501(c)(6) business league

    Lake Oswego, OR

    Ask it
    Proof for Oregon Aviation Industries
    IRS exempt-organization registration
    IRS 861098213
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(6) business league
    Checked
    Oct 23, 2026
    Where
    Lake Oswego, OR · serves Oregon
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 861098213 → IRS search

  16. Oregon Beverage Association

    Active501(c)(6) business league

    Lake Oswego, OR

    Ask it
    Proof for Oregon Beverage Association
    IRS exempt-organization registration
    IRS 930720486
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(6) business league
    Checked
    Oct 23, 2026
    Where
    Lake Oswego, OR · serves Oregon
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 930720486 → IRS search

  17. Oregon Building Officials Assoc

    Active501(c)(6) business league

    Lake Oswego, OR

    Ask it
    Proof for Oregon Building Officials Assoc
    IRS exempt-organization registration
    IRS 930949446
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(6) business league
    Checked
    Oct 23, 2026
    Where
    Lake Oswego, OR · serves Oregon
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 930949446 → IRS search

  18. Oregon Chiropractic Association

    Active501(c)(6) business league

    Lake Oswego, OR

    Ask it
    Proof for Oregon Chiropractic Association
    IRS exempt-organization registration
    IRS 263736741
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(6) business league
    Checked
    Oct 23, 2026
    Where
    Lake Oswego, OR · serves Oregon
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 263736741 → IRS search

  19. Oregon Medical Association

    Active501(c)(6) business league

    Lake Oswego, OR

    Ask it
    Proof for Oregon Medical Association
    IRS exempt-organization registration
    IRS 930497431
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(6) business league
    Checked
    Oct 23, 2026
    Where
    Lake Oswego, OR · serves Oregon
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 930497431 → IRS search

  20. Oregon Newspaper Publishers' Association, Inc.

    ActiveCorporation registered in SAM.gov

    Lake Oswego, OR

    Ask it
    Proof for Oregon Newspaper Publishers' Association, Inc.
    SAM.gov registration
    SAM.gov UH34LXL3XQF4
    Issuer
    SAM.gov
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Apr 15, 2027
    Checked
    Nov 2, 2026
    Where
    Lake Oswego, OR · serves Oregon
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → SAM.gov record

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