Haninge Municipality (Haninge kommun) is a municipality in Stockholm County in east central Sweden. Its seat is located in Handen, a part of Stockholm.Haninge Municipality was formed in 1971 when Västerhaninge and Österhaninge were united.The municipal coat of arms depicts a capercaillie from which the name Haninge is believed to have been derived (the German word hahn means capercaillie), while the anchor symbolizes the naval base in the municipality.