Ukrainian Democratic Alliance for Reform

The Ukrainian Democratic Alliance for Reform of Vitali Klitschko (Ukrainian: Український демократичний альянс за реформи Віталія Кличка; the acronym UDAR (Ukrainian: УДАР) translates to "strike" or "punch", English: PUNCH of Vitali Klitschko) is a political party in Ukraine headed by retired Ukrainian professional heavyweight boxer and the WBC world heavyweight champion emeritus Vitali Klitschko. The party has been an observer member of the European People's Party (EPP) since 2013.

Legally the party is the successor of Political Party "European Capital" (Ukrainian: Політична партія "Європейська столиця", Russian: Политическая партия "Европейская столица") which was registered in March 2005. In its last outing the party was founded on April 24, 2010, on the basis of the Vitali Klitschko Bloc (Ukrainian: Блок Віталія Кличка, Russian: Блок Виталия Кличко), a local political alliance in Kyiv (the capital of Ukraine).

The party won 40 seats in the Ukrainian parliament in the 2012 Ukrainian parliamentary election.

In the 2014 parliamentary election, 30% of the Petro Poroshenko Bloc election list was filled by members of UDAR (as non-partisan) and UDAR leader Klitschko topped that list. The Petro Poroshenko Bloc won the election with 132 seats. UDAR officially merged into the Petro Poroshenko Bloc on 28 August 2015.

In May 2019 Klitschko announced that UDAR would take part independently in the 2019 Ukrainian parliamentary election. In this election UDAR did compete as an independent party again, but only in 15 single-mandate constituencies and it failed to win any seats.

In the 2020 Kyiv local election UDAR won 30 of the 120 seats of the Kyiv City Council. In the same election Klitschko was reelected as Mayor of Kyiv with 50.52% of the votes.