NAICS Code 54 Professional, Scientific, and Technical Services


Professional, Scientific, and Technical Services


The Professional, Scientific, and Technical Services sector comprises establishments that specialize in performing professional, scientific, and technical activities for others. These activities require a high degree of expertise and training. The establishments in this sector specialize according to expertise and provide these services to clients in a variety of industries and, in some cases, to households. 

Cross References

This sector excludes establishments primarily engaged in providing a range of day-to-day office administrative services, such as financial planning, billing and recordkeeping, personnel, and physical distribution and logistics. These establishments are classified in Sector 56, Administrative and Support and Waste Management and Remediation Services.

Illustrative Examples

Legal advice and representation

Accounting, bookkeeping, and payroll services

Architectural, engineering, and specialized design services

Computer services

Consulting services

Research services

Advertising services

Photographic services

Translation and interpretation services

Veterinary services

Other professional, scientific, and technical services



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Total Companies: 692996

Est. Employment: 11557248

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