The Croatian Democratic Union is a major conservative, centre-right political party in Croatia. Since 2016, it has been the ruling political party in Croatia under the incumbent Prime Minister Andrej Plenković. It is one of the two major contemporary political parties in Croatia, along with the centre-left Social Democratic Party (SDP). It is currently the largest party in the Sabor with 62 seats. The HDZ governed Croatia from 1990 before the country gained independence from Yugoslavia until 2000 and, in coalition with junior partners, from 2003 to 2011, and since 2016.

Andrej Plenković is a Croatian politician who has been serving as the prime minister of Croatia since 19 October 2016. He was previously one of eleven Croatian members of the European Parliament, serving from Croatia's accession to the European Union in 2013 until his resignation as MEP when he took office as prime minister. Plenković has also been serving as the president of the Croatian Democratic Union since 2016.