Lyngdalsfjorden is a fjord in Agder county, Norway. The fjord begins at the village of Alleen in Lyngdal municipality and it flows southwest into Farsund municipality before emptying into the North Sea just south of the town of Farsund. The wide fjord is fed by the river Lygna at Alleen and it has a couple larger fjords that join the Lyngdalsfjorden. The ÃÂ ptafjorden joins the Lyngdalsfjorden from the northwest, coming from Sande and ÃÂ pta in the Herad area. The large lake Framvaren flows into the Helvikfjorden, which joins the Lyngdalsfjorden from the west.