Top PROFESSIONAL SERVICES Companies in United States
Approximately 3,479,931 real businesses classified under Professional, Scientific and Technical Activities in United States, with officer, shareholder and beneficial ownership records sourced directly from official government registries.
Approximately 3,479,931 real businesses operate in the Professional, Scientific and Technical Activities sector across United States. Consultants, lawyers, architects, and researchers make up a sector regulated twice over — once by company law, once by their own professional body. Legal, accounting, tax, management consulting, engineering, advertising, and R&D firms are frequently structured as partnerships or professional corporations, which layers licensing-body oversight on top of standard company registration rather than replacing it.
122 companies in this sector are indexed on Zavia so far, part of a continually growing dataset.
Beneficial-ownership and registration rules for Professional, Scientific and Technical Activities companies in United States follow the same national framework as every other sector there.
Full United States beneficial ownership overviewTop Professional, Scientific and Technical Activities Companies in United States
Live from the register. Every row opens the full record — officers, shareholders and resolved group structure.
Analysis
What this data actually tells you
Legal services in the United States carry a genuinely distinctive licensing structure: there is no national bar, and each of the 50 states plus DC independently licenses and regulates attorneys through its own state bar. Portability has improved through the Uniform Bar Exam (UBE), adopted by 41 jurisdictions (39 states plus DC and the US Virgin Islands) as of 2025, which allows a passing score to transfer between adopting states — but California, Florida, and Louisiana remain notable holdouts, offering no general reciprocity or admission-on-motion for most applicants from other states.
CPA licensure follows the same decentralized pattern, administered state-by-state through individual state boards of accountancy and only loosely harmonized via NASBA/AICPA’s Uniform CPA Examination. Counterparties verify an attorney’s actual current bar admission in the specific state where representation is needed, and an accountant’s actual current state licensing, rather than assume a credential earned in one state automatically transfers nationwide.
Who uses United States professional, scientific and technical activities ownership data
The three checks this sector's data is most often run for.
No-National-Bar / State Bar Verification
No national bar exists — each of the 50 states plus DC independently licenses attorneys via its own state bar; the Uniform Bar Exam (UBE), adopted by 41 jurisdictions as of 2025, enables score transfer between adopting states, but California, Florida, and Louisiana are notable holdouts with no general reciprocity; counterparties verify an attorney’s actual current bar admission in the specific state of practice.
State-by-State CPA Licensing Verification
CPA licensure is likewise administered state-by-state through individual state boards of accountancy, loosely harmonised via NASBA/AICPA’s Uniform CPA Examination; counterparties verify an accountant’s actual current state licensing directly.
Get complete shareholder and officer records, ultimate beneficial owner resolution, and ongoing ownership monitoring for United States companies — via API or a bulk data feed.
Frequently Asked Questions
How many Professional, Scientific and Technical Activities companies are registered in United States?
Approximately 3,479,931 real businesses operate under Professional, Scientific and Technical Activities in United States.
What does the Professional, Scientific and Technical Activities sector include in United States?
Consultants, lawyers, architects, and researchers make up a sector regulated twice over — once by company law, once by their own professional body. Legal, accounting, tax, management consulting, engineering, advertising, and R&D firms are frequently structured as partnerships or professional corporations, which layers licensing-body oversight on top of standard company registration rather than replacing it.
How is company ownership disclosed for Professional, Scientific and Technical Activities companies in United States?
The same national framework applies here as for every other sector in United States — there is no sector-specific beneficial-ownership regime for Professional, Scientific and Technical Activities.
Can I see all industries present in United States?
Yes — the United States company directory lists every industry with recorded companies for that jurisdiction, alongside the full beneficial-ownership overview for United States.
Can I see Professional, Scientific and Technical Activities companies in other countries?
Yes — the Professional, Scientific and Technical Activities sector directory lists every country with recorded Professional, Scientific and Technical Activities companies on Zavia.
Can Zavia monitor changes to Professional, Scientific and Technical Activities companies in United States over time?
A directory listing is a snapshot, not a live feed. Zavia's monitoring API tracks changes to registered shareholders, officers, and group structure for Professional, Scientific and Technical Activities companies in United States going forward, flagging updates as they are filed instead of requiring a manual recheck.
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