The International Democrat Union (IDU) is an international alliance of centre-right political parties. Headquartered in Munich, Germany, the IDU consists of 84 full and associate members from 65 countries. It is chaired by Stephen Harper, former Prime Minister of Canada, 2 affiliated international organizations (International Young Democrat Union and International …

The Centrist Democrat International (Spanish: Internacional Demócrata de Centro) is a Christian-democratic political international.Until 2001, it was known as the Christian Democrat International (CDI); before 1999, it was known as the Christian Democrat and People's Parties International. This earlier name is still sometimes used colloquially.