The European Conservatives and Reformists Party (ECR Party or simply ECR), formerly known as Alliance of European Conservatives and Reformists (AECR, 2009–2016) and Alliance of Conservatives and Reformists in Europe (ACRE, 2016–2019), is a conservative, soft Eurosceptic European political party with a main focus on reforming the European Union (EU) on the basis of Eurorealism, as opposed to total rejection of the EU (anti-EU-ism).
The political movement was founded on 1 October 2009, after the creation of the European Conservatives and Reformists (ECR) political group of the European Parliament. It was officially recognised by the European Parliament in January 2010.