Landstinget was the upper house of the Rigsdag, from 1849 until 1953, when the bicameral system was abolished in favour of unicameralism. Landstinget had powers equal to the Folketing, which made the two houses of parliament hard to distinguish.

An upper house is one of two chambers of a bicameral legislature, the other chamber being the lower house. The house formally designated as the upper house is usually smaller and often has more restricted power than the lower house. A legislature composed of only one house is described as unicameral.