Olivier Proust

Proust Legal advises multinational corporations across the full spectrum of European digital regulation. Combining EU-wide expertise with in-depth knowledge of French and Belgian domestic law, the firm provides strategic legal advice on the regulatory issues shaping today's digital economy.

Privacy & Data Protection

Proust Legal advises organizations on the responsible collection, use, sharing and protection of personal data. The firm helps clients design privacy programmes, comply with European and French data protection laws, and build governance frameworks that support innovation while safeguarding individuals' rights.

Cybersecurity

Cybersecurity has become a strategic and regulatory priority for organizations operating in Europe. Proust Legal advises clients on cybersecurity governance, cyber resilience, incident response and regulatory compliance, helping businesses manage cyber risk and respond effectively to security incidents.

Artificial intelligence

AI is transforming every sector of the economy while creating new legal and governance challenges. Proust Legal helps organizations develop, deploy and govern AI systems responsibly, ensuring compliance with Europe's evolving AI regulatory framework while enabling innovation and business growth.

Data Economy

Data has become one of the world's most valuable business assets. Proust Legal advises organizations on the legal frameworks governing access to, sharing and use of data, helping clients unlock the value of data while complying with the European Union's new generation of data legislation.

Digital Business

Digital technologies are reshaping the way businesses interact with customers, platforms and markets. Proust Legal advises companies on the legal framework governing digital services, online platforms, e-commerce and other aspects of the digital economy, enabling clients to operate confidently in an increasingly regulated environment.

Olivier Proust is the Founder and Managing Partner of Proust Legal, an independent Brussels-based law firm advising multinational corporations on European digital regulation.

For more than twenty years, Olivier has advised leading international companies on the legal and regulatory challenges arising from data protection, cybersecurity, artificial intelligence and digital technologies. His practice focuses on helping businesses navigate Europe's rapidly evolving digital regulatory framework while supporting innovation, international growth and the responsible adoption of emerging technologies.

Before founding Proust Legal, Olivier practised in several leading international law firms, culminating in his appointment as partner at an international law firm. Throughout his career, he has advised clients across a broad range of industries on complex cross-border regulatory matters, major cybersecurity incidents, international data transfers, AI governance and strategic compliance programmes.

Olivier is admitted to the Brussels and Paris Bars. He obtained his law degree from Université Panthéon-Assas (Paris II), before completing a Master of Laws (LL.M.) at the University of Toronto and a second master's degree in technology law at the Université Robert Schuman in Strasbourg. He also holds an Executive Diploma in Artificial Intelligence for Business from the Saïd Business School, University of Oxford, where he lectures on the EU AI Act and the legal implications of artificial intelligence for business leaders.

Clients value Olivier for his ability to combine technical legal expertise with commercial judgment, delivering clear, pragmatic advice that enables organisations to manage regulatory risk while pursuing their strategic objectives. He is a trusted advisor to senior executives, legal and compliance teams, and data protection officers on some of the most complex issues at the intersection of business, technology and regulation.

International Association of Privacy Professionals (IAPP)

Saïd Business School, Oxford

Executive Diploma in Artificial Intelligence for Business

2025 - 2026

Université Robert Schuman

Master of laws

2002 - 2003

University of Toronto

Master of Laws - LLM

2001 - 2002

Université Panthéon-Assas (Paris 2)

Bachelors in Law

1996 - 2001

Technology, life sciences, medical devices, biotech, energy, online retail, e-commerce, financial services.