The Criminal Law (Temporary Provisions) Act 1955 (often known by the abbreviation "CLTPA") is a Singapore statute that, among other things, allows the executive branch of the Government of Singapore to order that suspected criminals be detained without trial. It was introduced in 1955 during the colonial era and intended to be a temporary measure, but has since been renewed continuously; the Government has declined to make it permanent, claiming it "believe[s] that the Act should be explicitly extended by Parliament every five years". The validity of the Act was most recently extended in February 2018, and it will remain in force till October 2024.