Mark de Barros


  • LLM, Université Paris II Panthéon-Assas, 2014; Fulbright Research Scholar
  • JD, The George Washington University Law School, 2012; George Washington Merit Scholar; Member, George Washington Journal of International Law in Domestic Courts; Student Attorney, International Human Rights Clinic
  • Certificate in International Human Rights Law, University of Oxford, 2010
  • BA (Political Science & French), summa cum laude with Honors, The University of Arizona, 2007; Phi Beta Kappa; University Honors College


  • Not admitted in the District of Columbia. Supervised by an active member of the District of Columbia Bar.
  • New York, 2013
  • Paris, 2018

Court Admissions

  • International Criminal Court
  • Portuguese
  • French
  • Spanish
  • New York State Bar Association
  • International Criminal Court Bar Association
  • Hispanic National Bar Association
  • Brazilian American Lawyers Association
  • Phi Beta Kappa

Mark de Barros


View the French version.
View the Portuguese version.

Mark de Barros is an associate in Ropes & Gray’s Litigation and Enforcement practice group. Mark’s practice focuses on anti-corruption, anti-money laundering, export controls and trade compliance matters. 

Before joining Ropes & Gray, Mark served as a Legal Adviser for the Anti-Corruption Division and Working Group on Bribery of the Organization for Economic Cooperation and Development (OECD) in Paris, France. Prior to the OECD, Mark worked for the U.S. Department of Justice’s Criminal Division, Office of International Affairs, where he assisted with international investigations and prosecutions. Mark’s previous roles include teaching law and conducting research as a Fulbright scholar at the Université Paris II Panthéon-Assas, working as a Legal Fellow for Human Rights Watch, and clerking for a judge at the International Criminal Court in The Hague, Netherlands. 

A native of Brazil and the United States, Mark is admitted to practice law in New York and Paris (avocat à la Cour) and is eligible to appear as assistant counsel in proceedings before the International Criminal Court. 


  • Acting in support of Independent Compliance Monitor appointed by DOJ and SEC in connection with FCPA settlement.
  • Regularly conducts pre-acquisition anti-corruption, anti-money laundering, and sanctions due diligence for large private equity firms and other clients in high-risk jurisdictions, including assisting with post-acquisition implementation of enhanced compliance controls.
  • Advised Brazilian executive on U.S. law aspects in connection with investigation and prosecution brought by the Brazilian Federal Prosecution Service (Ministério Público Federal).
  • Conducted on-site visits to Member countries of the OECD Anti-Bribery Convention to gather evidence on countries’ implementation and enforcement of the Convention, including co-coordinating and co-leading panels with prosecutorial, judicial and investigative authorities, as well as members of the private sector and civil society.*
  • Co-coordinated efforts to develop and establish the Latin America and Caribbean Anti-Corruption Law Enforcement Officials’ Network (LAC LEN), the first-ever mechanism of its kind dedicated to bringing together anti-corruption prosecutors region responsible for investigating and prosecuting anti-bribery laws.*
  • Advised the Government of Greece on the implementation of several components of its National Anti-Corruption Action Plan, including making recommendations for legislative reforms of Greece’s anti-corruption framework.*
  • Assisted U.S prosecutors and law enforcement agencies on international facets of a wide array of criminal prosecutions, including matters such as foreign bribery, fraud, sanctions, terrorism and violent crime.*
  • Member of team that represented European client in arbitration against Brazilian joint venture partner in a commercial dispute governed by Brazilian law.*
  • Member of team that represented victims of crimes against humanity and war crimes committed during former Chadian President Hissène Habré’s rule.*
  • Assisted in the successful representation of victims of human rights violations committed in Colombia in proceedings before the Inter-American Court of Human Rights.*
  • Assisted in the drafting of decisions and orders issued by the Pre-Trial and Trial Chambers of the International Criminal Court, including in proceedings such as The Prosecutor v. Muammar Gaddafi, Saif Al-Islam Gaddafi and Abdullah Al-Senussi and The Prosecutor v. Jean-Pierre Bemba Gombo.*

* Experience prior to joining Ropes & Gray



  • Panelist, “Corruption in Relation to Economic Inequality and its Effect on Development in Latin America”, Edinburgh Latin America Forum, University of Edinburgh (February 2018)
  • Moderator, “International Standards and Tools Relating to Asset Recovery”, OECD – Ministry of Justice of Greece, Training and Capacity-Building Workshop, Athens, Greece & Thessaloniki, Greece (November 2017)
  • Panelist, “Getting the Evidence You Need: Essential Elements of MLA Requests”, OECD – Ministry of Justice of Greece, Workshop, Athens, Greece & Thessaloniki, Greece (June 2017)
  • Presenter, “Direct International Cooperation, Spontaneous Exchange of Information and Informal Cooperation Tools”, OECD Working Group on Bribery - Latin America Law Enforcement Officials’ Meeting, Paris, France (June 2017)
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