TOP 25 EXPERT WITNESS COMPANIES: DIRECTORY SEARCH FIRMS FOR TESTIMONY CONSULTANTS

Top 25 expert witness companies, search firms and directories note that testimony consultants have become indispensable in today’s legal sector. As litigation grows more demanding—driven by technological innovation, global commerce, regulatory scrutiny, and scientific advancement—courts increasingly rely on Top 25 expert witness companies and SME testimony to clarify facts, interpret data, and explain specialized subject matter to judges and juries.

No matter if in antitrust disputes, medical malpractice cases, intellectual property litigation, or construction defect claims, external thought leaders, KOLs and influencers can be decisive in case outcomes.

To meet this demand, a specialized industry of Top 25 expert witness companies list providers has emerged. Search companies do far more than maintain lists of professionals. The best Top 25 expert witness companies authorities rigorously vet credentials, assess litigation experience, evaluate communication skills, manage conflicts, and match testifying consulting leaders precisely to the needs of a case. Certain directories operate as large expert networks, others as boutique search firms, and still others as economic or technical consulting practices that provide both testimony and analytical support.

We look at Top 25 expert witness companies you may wish to consider. Note that firms below are presented in no particular order, are not formally review and simply have  been noted as potential options for law firms and attorneys, included given their scale, reputation, specialization, and impact on the legal profession. That said, you’ll want to do your own research on Top 25 expert witness companies as results may vary.

1. Expert Institute

One of the most prominent providers, Expert Institute combines technology with human vetting to connect attorneys with qualified experts across thousands of disciplines. Its structured process and speed make it popular with both large firms and solo practitioners.

2. Cahn Litigation Services

Known for its highly customized expert searches, Cahn Litigation Services focuses on precision matching and in-depth research. The firm is frequently used in high-stakes and demanding litigation where credibility is paramount.

3. IMS Legal Strategies (IMS ExpertServices)

IMS offers end-to-end Top 25 expert witness companies recruitment solutions alongside litigation consulting services. Its recruiter-style approach ensures experts are thoroughly screened for both expertise and courtroom effectiveness.

4. GLG (Gerson Lehrman Group)

As one of the world’s largest expert networks, GLG provides access to hundreds of thousands of professionals, including former executives, regulators, scientists, and academics. It is especially influential in commercial and regulatory matters.

5. Round Table Group

With decades of experience, Round Table Group is respected for its rigorous expert screening and long-term relationships with highly seasoned professionals across technical and scientific fields.

6. ForensisGroup

ForensisGroup emphasizes speed, quality, and transparency. Its blend of technology and human review allows attorneys to identify qualified experts efficiently without sacrificing vetting depth.

7. SEAK, Inc.

SEAK is unique in combining expert referrals with expert witness training and education. It also operates a well-known expert directory used widely by litigators.

8. Rubin Anders

This firm specializes in customized expert searches with predictable pricing models, making it attractive for firms seeking tailored solutions without open-ended costs.

9. Teklicon

The search directory focuses heavily on credential verification and litigation history analysis, helping attorneys mitigate risks associated with Daubert challenges and cross-examination.

10. JurisPro

JurisPro is a long-standing expert witness directory that allows attorneys to search experts directly by specialty, location, and experience, offering broad visibility across disciplines.

Economic and Litigation Consulting Leaders

These firms combine expert testimony with economic, financial, and analytical support.

11. Analysis Group

Renowned for economic and financial expertise, Analysis Group provides expert testimony in antitrust, securities, healthcare, and regulatory matters.

12. Cornerstone Research

A provider of financial and economic analysis, Cornerstone Research is frequently retained in high-profile securities and corporate litigation.

13. CRA International

CRA delivers expert testimony and advisory services across competition, finance, energy, and life sciences, often in global disputes.

14. NERA Economic Consulting

The firm is widely respected for applying economic theory to litigation and regulatory challenges, with experts frequently testifying in major cases worldwide.

15. Berkeley Research Group (BRG)

BRG combines economic consulting, forensic accounting, and expert testimony across a wide range of industries and disputes.

Specialized and Niche Expert Providers

Firms focus on targeted areas such as healthcare, technology, engineering, or executive expertise.

16. The Brattle Group

The Brattle Group specializes in economic, financial, and regulatory testimony, particularly in antitrust, IP valuation, and energy matters.

17. Keystone Strategy

Offers expert testimony support across varying disputes, investigations, and restructuring matters for large-scale firms.

18. Eleven Canterbury

Focuses on sourcing former C-suite executives and senior industry leaders as expert witnesses, especially in commercial and governance disputes.

19. AP Expert Group

Provides tailored expert placements in healthcare, life sciences, technology, and financial services.

20. Martello

Serves a broad range of industries, including engineering, technology, AI, CPG, medicine, and finance.

21. Experts.com

Experts.com operates as a comprehensive directory of expert witnesses and consultants, offering broad coverage across disciplines.

22. Expert Strategy Group

This firm emphasizes strategic expert placement and litigation alignment, often assisting in complex, multi-expert cases.

23. JS Held

Provides technical, scientific, and financial experts, frequently used in construction, environmental, and engineering litigation.

24. Exponent

Known for scientific and engineering expertise, with experts testifying in product liability and failure analysis cases.

25. DOAR

Focused on expert admissibility, background analysis, and testimony evaluation.

Hire Testimony Consultants and Trial Testifying Experts

The global Top 25 expert witness companies industry aids in modern litigation, tying the loop among subject matter and legal decision-making. While some companies excel in speed and scale, others differentiate through extensive specialization, rigorous vetting, or integrated consulting services. Choosing the right search directory depends on the nature of the dispute, the level of scrutiny expected, and the strategic importance of testimony.