Kiukainen (Swedish: Kiukais) is a former municipality of Finland.
The municipality had a population of 3,408 (2003) and covered an area of 149.88 km2 of which 0.22 km2 is water.
In Kiukainen there are many ancient gravehills made from piled stones.
Largest of them is called Kuninkaanhauta, "the king's grave", located in the Panelia village.
This Western Finland location article is a stub.