Ewa Bożena Kopacz (IPA: [ˈɛva ˈkɔpat͡ʂ] ⓘ; née Lis; born 3 December 1956) is a Polish politician who has served as a Vice-President of the European Parliament since 2019.

She was ranked as the world's 40th most powerful woman by Forbes magazine in 2015, placing her ahead of Queen Elizabeth II of the United Kingdom and American television personality Ellen DeGeneres.

[citation needed] She entered active politics after her late husband, Marek Kopacz, a prosecutor, stood unsuccessfully for parliament.

[citation needed] In 2001, Kopacz left the Freedom Union to join the newly established Civic Platform political party.

[5] In 2009 Kopacz gained some degree of international fame by requesting pharmaceutical companies to present the advantages of swine flu vaccines, and demanding they take full responsibility for the side effects.

[citation needed] On 22 September 2014 Ewa Kopacz was sworn in as prime minister, after Donald Tusk resigned to take office as President of the European Council, and formed a cabinet.

At her first EU summit in October 2014, Kopacz managed to persuade the other Member States that Poland deserved lucrative concessions as part of a deal to cut European carbon emissions.

[10] After the European Commission opened infringement proceedings against Poland for violating particle pollution levels and was investigating reports that it has also exceeded limits on nitrogen oxides, Kopacz's government declared 2015 to be the Year of Improving Air Quality and backed a proposal to empower regional authorities to clamp down on pollution from vehicles and from the burning of coal and wood in homes.

[11] Poland's 2014 local elections, a ballot expected to provide a solid show of support for Kopacz, saw her party instead attract fewer votes than the opposition for the first time in almost a decade.

[12] Instead, she appointed a group of relative political unknowns to her government in an effort to regain voters' trust and avoid defeat in the upcoming elections.