Security of data is a crucial aspect in modern society due to increased interaction and exchange of information. With the development of technologies, organizations and people are facing increasing risks in terms of privacy. Handling such regulations such as GDPR and CCPA cannot be handled without engaging legal professionals. This article showcases the list of the top 30 international law firms with regard to data privacy.
Overview of Leading Data Privacy Law Firms
Selecting the right law firm helps to traverse through the complicated data privacy laws. The leading firms possess expertise, global reach, and innovation and they provide compliance assessments, litigation support and advisory services. We have ranked here the top 30 firms of 2025 according to reputation, specialisation, and achievements. The following are the top 30 International Data Privacy Law Firms-
1. Hogan Lovells
Based in Washington, D.C., USA, and established in 1904, Hogan Lovells boasts over 2,600 attorneys globally. The firm was known to offer comprehensive GDPR compliance strategies and helped Fortune 500 companies in achieving seamless data transfer after Brexit.
2. DLA Piper
DLA Piper is an international law firm headquartered in London, UK and founded in 2005 with 4,200 plus lawyers in more than 40 countries. DLA Piper is renowned for introducing global legal excellence, advising fortune 500 companies, together with driving compliance with transformative regulations like India's Digital Personal Data Protection Act, 2023.
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3. Baker McKenzie
Baker McKenzie has some 13,000 employees, based in Chicago, USA, and founded in 1949. Work has been recognized on such topics as cross-border data breaches and AI driven privacy risk assessment tools.
4. Clifford Chance LLP
Clifford Chance has around 6,000 professionals around the globe and is based in London, UK. This firm works on helping financial institutions meet stringent requirements of GDPR and build robust data protection frameworks.
5. Morrison & Foerster LLP
This firm is headquartered in San Francisco, USA, and has more than 1,000 lawyers throughout the world. They represented a very specialized industry, advising on privacy preserving machine learning projects.
6. Bird & Bird
Bird & Bird, based in London, UK, boasts more than 1,300 legal experts around the world. The firm is involved actively in discussions on data privacy reforms within the European Union, and helping startups with their compliance.
7. Covington & Burling LLP
Covington & Burling is based in Washington, D.C., USA, and has more than 1,100 attorneys worldwide. The firm represented tech giants in tech privacy litigations and compliance strategies for emerging data protection laws.
8. WilmerHale
Based in Boston, USA, and established in 2004, WilmerHale has around 1,000 legal professionals. The firm frequently advises on cybersecurity breaches and regulatory investigations in data privacy.
9. Sidley Austin LLP
The Chicago, USA headquartered, Sidley Austin, established in 1866 is a law firm that employs over 2,000 attorneys. The firm is known for its privacy impact assessments work with multinational corporations on international data transfers.
10. Allen & Overy
Allen & Overy is based in London and Founded in 1930 with over 5,500 professionals worldwide. The firm helps fintech companies get data privacy compliance in place.
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11. Latham & Watkins LLP
Latham & Watkins, headquartered in Los Angeles, USA was formed in 1934, with over 3,000 attorneys. They led high profile cases about GDPR violations and built AI tools to monitor their compliance.
12. Norton Rose Fulbright
Founded in 1794 based in London, UK, the firm offers more than 4,000 professionals. The firm helped determine how healthcare organisations should protect personal data during the COVID-19 pandemic.
13. Freshfields Bruckhaus Deringer
Freshfields is headquartered in London, UK and currently has over 5,000 professionals. This firm has been instrumental in guiding international banks through GDPR compliance audits.
14. Herbert Smith Freehills
Founded in London in 2012, headquartered in the UK, this firm employs around 5,000 professionals. The firm’s centre of expertise for Asia Pacific's evolving data privacy landscape & AI regulations.
15. Dentons
Dentons is the world’s largest law firm with over 20,000 professionals based in Chicago, USA, and founded in 2013. The firm is often referred to for its counsel on cross border data transfers and compliance programmes.
16. Linklaters LLP
Linklaters is based in London, UK and has approximately 5,000 people around the globe. It is renowned for facilitating firms in the global financial services sector to navigate complex data protection architectures.
17. King & Spalding LLP
King & Spalding is headquartered in Atlanta, USA and was created in 1885.It has over 1,200 attorneys. The firm pioneered privacy advisory services for quantum computing technologies.
18. Skadden, Arps, Slate, Meagher & Flom LLP
Skadden is headquartered in New York, USA and has nearly 1,700 attorneys worldwide. It is known for successfully representing clients in defending against data privacy class action lawsuits.
19. Arnold & Porter
The firm with headquarters in Washington D.C, USA was founded in 1946 and currently made up of over 1,000 legal professionals. The firm is an advisor to government agencies on privacy policy frameworks.
20. Orrick, Herrington & Sutcliffe LLP
Founded in San Francisco, USA in 1863, Orrick now has more than 1,000 attorneys based in the country. It helps in shaping data privacy policies in Silicon Valley.
Also, Get to Know Role of Cyber Security In Data Privacy
21. White & Case LLP
White & Case headquartered in New York, USA, has more than 2,500 professionals and works specifically with compliance for international e-commerce platforms.
22. Goodwin Procter LLP
The firm is based in Boston, USA, and has more than 1,800 professionals. It is known for its experience in digital health data privacy laws.
23. Ashurst LLP
Ashurst is headquartered in London, the UK and has around 5,000 employees. This firm is a global telecom data privacy regulations leading advisor.
24. Jones Day
The firm, based in Cleveland, USA was founded in 1893 and employs more than 2,500 attorneys. The firm represents clients in high stakes data breach litigation.
25. Paul Hastings LLP
The Firm is based in Los Angeles, USA, was founded in 1951, now acquires 1,000 lawyers. Paul Hastings LLP helped media companies design global data privacy strategies.
26. CMS Legal
CMS is headquartered in London, UK with more than 5,000 legal experts based throughout the world and works on compliance programs and specializes in the automotive sector.
27. Pinsent Masons LLP
Pinsent Masons has its headquarters in London, UK and today it has over 3,500 professionals and is known for advising on GDPR compliance education sector.
Also, Get to Know What is Importance of Data Retention Policy
28. Shearman & Sterling LLP
Shearman & Sterling was formed in 1873 and is based in New York, USA, and has approximately 850 professionals. It is a data privacy key advisor for cryptocurrency platforms.
29. Gibson, Dunn & Crutcher LLP
Gibson, Dunn & Crutcher LLP was founded in 1878 in Los Angeles, California, and has 1,300 attorneys. The firm defended clients in data privacy litigation around the world.
30. Dechert LLP
Dechert LLP is founded in Philadelphia, Pennsylvania, brings over 900 legal professionals to serve their clients. This firm specializes in advising pharmaceutical companies in data protection.
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Top Data Privacy Law Firms FAQs
Q1. What is a data privacy law firm?
They support businesses and individuals with data protection, compliance and privacy related litigation around privacy laws.
Q2. How are law firms assisting with GDPR compliance?
Firms like Hogan Lovells provide GDPR compliance support to businesses, for example, data transfer strategies and risk assessments.
Q3. Which firms specialize in tech company data privacy?
Tech companies consulting on data privacy and AI clauses are in firms like Covington & Burling and Morrison & Foerster.
Q4. How do law firms deal with data breaches?
Data breach files handled by top firms like Skadden include compliance, the implementation of corrective measures and representing clients in defence of them.
