Until 1 January 2007, Helsinge was a municipality (Danish, kommune) in Frederiksborg County on the north coast of the island of Zealand (Sjælland) in eastern Denmark.
Its last mayor was Claus Lange, a member of the Venstre (Liberal Party) political party.
The main town and the site of its municipal council was the town of Helsinge.
Helsinge municipality ceased to exist as the result of Kommunalreformen ("The Municipality Reform" of 2007).
This created a municipality with an area of 278 km2 and a total population of 40,409 (2005).