Events from the year 1666 in Denmark.
Incumbents
Monarch – Frederick III
Events 11 February; Denmark-Norway agrees an offensive alliance with the Dutch Republic against England, and enters the Second Anglo-Dutch War; 1 August – Anders Bording's Den Danske Mercurius, Denmark's first newspaper, is published for the first time.
Undated
Holmen Cemetery, the oldest cemetery in Denmark still in use, relocates to its current location in Østerbro
Births 22 February – Christian Christophersen Sehested, nobleman (died 1740) 16 June – Johan Conrad Ernst, architect (died 1750)
Deaths 23 September Hannibal Sehested, diplomat (born 1609) 30 October – Iver Krabbe, nobleman and military officer (born 1602)
References