The Christian Social Party of Liechtenstein (German: Christlich-Soziale Partei Liechtensteins, CSP) was a political party of Liechtenstein.
The party was established in 1961, In the 1962 elections it received 10% of the vote, but failed to win a seat in the Landtag. It appealed to the Constitutional Court, which subsequently ruled that the 18% electoral threshold was unconstitutional. However, the party failed to win a seat in elections in 1966, 1970 and 1974.
It did not contest the 1978 or 1982 elections.