Tatiana R. Martins
  1. Partner

Ms. Martins is a partner in Davis Polk’s Litigation Department and its White Collar Defense & Investigations Group. Her practice focuses on representing companies and individuals in white-collar criminal defense and regulatory enforcement matters, and in conducting internal investigations, including in areas involving violations of the anti-bribery laws, money laundering, and financial frauds. She also routinely advises companies on compliance matters.

Ms. Martins rejoined Davis Polk in 2018 from the U.S. Attorney’s Office for the Southern District of New York, where she was an Assistant U.S. Attorney for six years and served as Chief of the Public Corruption Unit.

In her role as Chief of Public Corruption, Ms. Martins led a team of over 20 prosecutors and other professionals responsible for investigating and prosecuting a wide range of domestic and foreign corruption offenses and frauds against the government.  Ms. Martins successfully oversaw several major investigations and prosecutions during her tenure, including those against Michael D. Cohen for campaign finance violations, bank fraud and tax fraud; NCAA basketball coaches and other individuals for bribery and wire fraud; the former Executive Deputy Secretary to the Governor of New York for bribery and wire fraud related to the “Buffalo Billions” project; and high-level United Nations officials and others for violations of the Foreign Corrupt Practices Act. 

Ms. Martins is also an experienced trial lawyer, having tried to jury verdict multiple high-profile cases at the U.S. Attorney’s Office, including those of Sheldon Silver, the former Speaker of the New York Assembly, and Dean Skelos, the former New York Senate Majority Leader, for bribery and other corruption offenses. She also handled numerous investigations involving money laundering, mail fraud and wire fraud, and conducted the corruption investigations into the Office of the Mayor of New York City, and the shutdown by the Office of the Governor of New York State of the Moreland Commission to Investigate Public Corruption.

Ms. Martins was born in Recife, Brazil and is a native Portuguese speaker.

Work Highlights

  • Has represented large multinational corporations in connection with DOJ and SEC investigations of bribery-related allegations in Latin America, Europe and Asia, including Siemens AG and AstraZeneca
  • Conducted numerous internal investigations, including in U.S., Brazil, Colombia, Mexico and Serbia
  • Represented a large multinational corporation in connection with investigations by the World Bank, the Inter-American Development Bank, the Asian Development Bank, the African Development Bank, the European Bank for Reconstruction and Development, and the United Nations
  • Assisted clients in evaluating and developing compliance policies, procedures, strategies and trainings to mitigate risk
  • Conducted international arbitration on behalf of major international oil and gas company
  • Successfully defended a major pharmaceutical company against claims of false advertising in a federal civil trial


  • Lawdragon Global Litigation 500 – International Disputes, esp. White Collar, FCPA, 2021
  • Expert Guides – White Collar Crime, 2021 

Of Note

  • Spent six months as a volunteer at the International Organization for Migration, in Maputo, Mozambique, where she designed and conducted an extensive assessment of migrant workers’ access to HIV/AIDS education, prevention and treatment (2010)
  • Has represented asylum applicants on a pro bono basis in federal immigration court
  • A native speaker of Portuguese, proficient in Spanish
  • Member, Board of Directors, Office of the Appellate Defender

  • Member, Board of Directors, The Tinker Foundation

Professional History

  • Partner, Davis Polk, 2018-present
  • Assistant U.S. Attorney, Southern District of New York, 2012-2018
    • Chief, Public Corruption Unit, 2017-2018
    • Deputy Chief, Public Corruption Unit, 2016-2017
  • Associate, Davis Polk, 2005-2009 and 2010-2012
  • Law Clerk, Hon. Denise Cote, U.S. District Court, S.D. New York, 2003-2004

Bar Admissions

  • State of New York
  • U.S. Court of Appeals, Second Circuit
  • U.S. District Court, S.D. New York


  • B.A., UC Berkeley, 1998
    • Phi Beta Kappa
    • summa cum laude
  • J.D., Yale Law School, 2003
    • Editor, Yale Journal of Law & the Humanities


  • Portuguese
  • Spanish