European Solidarity is a political party in Ukraine. It has its roots in a parliamentary group called Solidarity dating from 2000 and has existed since in various forms as a political outlet for Petro Poroshenko. The party with its then name Petro Poroshenko Bloc won 132 of the 423 contested seats in the 2014 Ukrainian parliamentary election, more than any other party.

Petro Oleksiiovych Poroshenko is a Ukrainian oligarch and politician who served as the fifth president of Ukraine from 2014 to 2019. Poroshenko served as the Minister of Foreign Affairs from 2009 to 2010, and as the Minister of Trade and Economic Development in 2012. From 2007 until 2012, he headed the Council of Ukraine's National Bank. He was elected president on 25 May 2014, receiving 54.7% of the votes cast in the first round, thus winning outright and avoiding a run-off. During his presidency, Poroshenko led the country through the first phase of the war in Donbas, pushing the Russian separatist forces into the Donbas Region. He began the process of integration with the European Union by signing the European Union–Ukraine Association Agreement.