LAWYER PROFILE
Marco D'Ostuni

Marco D'Ostuni

Europe 2026

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Chiomenti
 Chiomenti

Ranked in 2 practice areas

Competition/European Law

Italy

19 years ranked

TMT: Telecommunications

Italy

17 years ranked

About

Provided by Chiomenti

Practice Areas

Marco has assisted large multinational companies in complex competition law matters, proceedings and litigation before European and national competition authorities, in European courts and in Italian civil and administrative courts. He also deals with European and Italian regulation of telecommunications, energy and media.

Career

Marco D'Ostuni joined the Firm as Partner in 2024. Since 2025 he is Head of the "European Law & Antitrust" Practice Area.

Professional Memberships

Member of the Roma Bar (Italy), 2001

Admitted to New York State Bar, 2003

Admitted to practice before the Supreme Court, Italy, 2013

Chambers Review

Provided by Chambers

Chambers European Guide

Competition/European Law - Italy

Band 1
Individual Editorial

A popular choice with clients from the TMT sector, Marco D'Ostuni moves into the top tier of the rankings this year. He has a strong focus on representing clients in appeals against authority decisions. He further acts on the initial investigation into allegations of anti-competitive behaviour and on subsequent follow-on damages actions. He has additional experience in merger clearance mandates, including those necessitating a phase II investigation.

Learn more about this teamView ranking table

TMT: Telecommunications - Italy

Band 2
Individual Editorial

Marco D'Ostuni is a skilled lawyer who stands out for his expert handling of contentious mandates, which include damages claims and competition disputes in the telecoms sector. He notably assists major domestic telecom providers.

Learn more about this teamView ranking table

Strengths

Provided by Chambers

  • Marco D'Ostuni is a smart lawyer.

    Competition/European LawChambers European Guide

  • Marco D'Ostuni is thorough and incredibly thoughtful. He has a clear direction and strategy.

    Competition/European LawChambers European Guide

Ranked Individuals at Chiomenti (69)

Italy

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