Amaryllis Müller

Partner at Cleary Gottlieb

Speaker

Amaryllis Müller’s practice covers a wide range of competition matters, with a particular focus on the intersection of competition law and digital regulation.

She is widely recognized as a leading advisor on the EU’s Digital Markets Act (DMA) and the broader European digital regulatory framework, regularly advising major technology companies and multinational corporations on the most consequential matters shaping the application of Europe’s new digital regulatory landscape.

Her practice also covers all aspects of European and Belgian competition law, including cross border merger control, abuse of dominance proceedings, cartel investigations and antitrust litigation including follow-on damages claims. She has represented clients in multiple cases before the European and Belgian authorities and courts.

Amaryllis joined the firm as counsel in 2025 after serving as senior antitrust counsel in the Brussels office of a major social media company. During this time, she gained significant in-house experience advising on global antitrust matters, including compliance with digital regulation and day-to-day product counseling.

Previously she worked at another international law firm in Brussels for nearly 10 years, including a 10-month secondment to their Washington, D.C. office.

Amaryllis became a partner in 2026.