Margrethe Vestager, born on 13 April 1968 in Copenhagen, Denmark, is a Danish politician renowned for her roles in European Union governance, particularly in competition policy and digital regulation. She served as the Executive Vice President of the European Commission for A Europe Fit for the Digital Age from December 2019 to November 2024 under Ursula von der Leyen's Commission, and prior to that, as European Commissioner for Competition from 2014 to 2024 under both Jean-Claude Juncker and von der Leyen. In these positions, Vestager has been a key enforcer of EU antitrust laws, leading high-profile investigations and fines against major tech companies, including challenges against Apple Inc. for tax arrangements in Ireland, Google for antitrust violations, and Amazon for market dominance practices. Her tenure has positioned her as a central figure in shaping Europe's approach to big tech regulation and promoting fair competition in the digital economy.

Before her EU career, Vestager was active in Danish politics as a member of the Social Liberal Party (Radikale Venstre), which she led from 2007 to 2011. She held several ministerial positions in Denmark, including Minister for Health and Prevention (2010–2011), Minister for Ecclesiastical Affairs (2011), and Minister for Education (2011–2014). Earlier, she worked as a political advisor and in economic policy roles. Vestager also has a background as a poet, having published poetry in her youth. She is married to Troels Lund Poulsen, a fellow politician, and they have three children. Her political ideology aligns with social liberalism, emphasizing education, innovation, and market regulation.

Vestager's influence extends through her affiliations with the Alliance of Liberals and Democrats for Europe (ALDE) at the European level. She has been praised for her principled enforcement of competition rules but criticized by some for overreach in regulatory actions against U.S. tech firms, leading to ongoing legal battles. No major legal controversies or personal scandals are documented against her, though her decisions have sparked political and corporate backlash.