In Portuguese law, the assentos (literally, settlements) were general obligatory rules expressed in some of the decisions of the Supreme Court of Justice. Unlike precedents, the assentos had the form of a general rule. Unlike statutory legislation, the assentos were made by a court and after a concrete case was presented before the court.

The assentos were declared unconstitutional by the Constitutional Court, after the 1982 constitutional revision and no longer exist in Portuguese law.