LAWYER PROFILE

Antonio Martínez

Europe 2026

A&O Shearman

Ranked in 1 practice area

Competition/European Law

Spain

19 years ranked

About

Provided by A&O Shearman

Europe

Practice Areas

Competition and European Law

Personal

Antonio has an extensive professional and academic career with 27 years of experience in European and Competition Law, including all types of competition and merger control proceedings before the Spanish Competition Authority (Comisión Nacional de los Mercados y la Competencia), Spanish Commercial Courts, European Commission and the European Court of Justice of the European Union.

Antonio is the author of numerous legal publications, a member of the board of directors of the Spanish Association for the Defence of Competition, former vice secretary general of the Spanish Association for the Study of European Law (2008-2019) and of the Editorial Board of several legal publications. He is a professor on the Competition and European Law master’s degree course at the University of Carlos III of Madrid and he is also a professor of Competition Law at the Pharmaceutical Industry Programme at the IE Business School. He is an usual speaker in specialized fora.

Antonio is recommended in legal directories such as Chambers & Partners, (every year since 2003 until today), Legal 500 and Practical Law Company.

Chambers Review

Provided by Chambers

Chambers European Guide

Competition/European Law - Spain

Band 2

Individual Editorial

Antonio Martínez is a well-established figure in the market with notable experience in handling merger control procedures, often acting for private equity houses and energy companies. In addition, he assists clients with CNMC investigations into alleged abuses of dominance and bid rigging, as well as damages actions.

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Strengths

Provided by Chambers

Antonio Martínez stands out for his ability to adapt quickly, he knows when an immediate response is key and when it's more strategic to wait. This skill demonstrates excellent professional judgment.
Competition/European LawChambers European Guide
It is always a pleasure to work with Antonio Martínez. He has a very pragmatic approach when it comes to providing advice, which is very much needed for in-house teams.
Competition/European LawChambers European Guide
He has a good overall analysis, doesn't lose too much time in details and takes a step back to have a holistic view. He still has his feet on the ground and doesn't just delegate.
Competition/European LawChambers European Guide
I have absolute confidence in him.
Competition/European LawChambers European Guide