Christian Social People's Party

The Christian Social People's Party (Luxembourgish: Chrëschtlech-Sozial Vollekspartei, French: Parti populaire chrétien-social, German: Christlich-Soziale Volkspartei, CSV or PCS) is the largest political party in Luxembourg. The party follows a Christian democratic and conservative ideology and has been described as centre-right. Furthermore, akin to most parties in Luxembourg, it is strongly pro-European. The CSV is a member of the Christian Group, European People's Party, and the Centrist Democrat International.

The CSV has been the largest party in the Chamber of Deputies since the party's formation, and currently holds 21 of 60 seats in the Chamber. Since the Second World War, every Prime Minister of Luxembourg has been a member of the CSV, with only two exceptions: Gaston Thorn (1974–1979), and Xavier Bettel (2013–2023). It holds two of Luxembourg's six seats in the European Parliament, as it has for 14 of the 44 years for which MEPs have been directly elected.