Events

• January 10 – The decision to introduce absolute monarchy
  Absolute monarchy
  Absolute monarchy is a monarchical form of government in which the monarch exercises ultimate governing authority as head of state and head of government, his or her power not being limited by a constitution or by the law. An absolute monarch thus wields unrestricted political power over the...
  
   from the previous year enters into effect.
• January 12 – The State College proposes a comprehensive codification of Danish law, later resulting in the Danish Code of 1683
  Danish Code
  Danske Lov is the title of a Danish statute book from 1683, that previously formed the basis for the Danish legislation. Even though it is mainly a compilation of older, regional laws, it took 7 different commissions several decades under two different monarchs to put the Code together...
  
  .
• January – The Royal Horse Guards
  Royal Horse Guards (Denmark)
  The Royal Horse Guards was a regiment in the Royal Danish Army which was founded on orders from King Frederick III in January 1661 and discontinued on 31 May 1866. It served both as Royal Guards and as a front line cavalry unit....
  
   is founded. It is discontinued in 1866.
• February 14 – The Supreme Court of Denmark
  Supreme Court of Denmark
  The Supreme Court of Denmark is the supreme court and the third and final instance in all civil and criminal cases in Denmark. It is based at Christiansborg Palace in Copenhagen which also houses the Danish Parliament.-History:...
  
   is established.
• April 16 – Joachim Gersdorff
  Joachim Gersdorff
  Joachim Gersdorff was a Danish politician, from 1650 to 1660 Steward of the Danish Realm. It was Gersdorff who negotiated the Treaty of Roskilde on Denmark's part during the Second Northern War, a war he had himself been in favour of entering...
  
   dies suddanly, giving rise to rumours that he has been poisoned. His wife Øllegaard Huitfeld and a maidservant are indicted and convicted of murder.
• April 24 – Auctions are first authorized in Copenhagen and an auction master is engaged.
• May 7 – A tax on marriage is introduced (the so-called kopulationspenge)
• June 4 – The so-called Demarcation Line around Copenhagen is introduced when it is prohibited to build in the zone between the city's Fortification Ring
  Fortifications of Copenhagen (17th century)
  The fortifications of Copenhagen underwent a comprehensive modernization and expansion in the 17th century. The project was commenced and largely masterplanned by Christian IV in the early 17th century but continued and completed by his successors...
  
   and The Lakes.
• June 24 – The Coat of arms of Copenhagen
  Coat of arms of Copenhagen
  The coat of arms of Copenhagen was granted 24 June 1661 by king Frederick III of Denmark in appraisal of its citizens' efforts in repelling the Swedish siege and attack on Copenhagen in 1658-1659...
  
   is granted to the city by the king in appraisal of its citizens' efforts in repelling the Swedish siege and attack on the city the previous year. An accompanying royal letter of privilege also introduced various privileges which, however remained of relatively minor importance. The city is also granted the fief Roskilde (Bidstrup estate).* September – Corfitz Ulfeldt
  Corfitz Ulfeldt
  Corfitz Ulfeldt , Danish statesman, son of the chancellor Jacob Ulfeldt.Corfitz Ulfeldt may also refer to:* Corfitz Ulfeldt , son of Danish diplomat Jacob Ulfeldt...
  
   and Leonora Christina are released from their imprisonment at Hammershus
  Hammershus
  Hammershus is Northern Europe's largest medieval fortification, situated above sea level on Hammeren, the northern tip of the Danish island of Bornholm in the Baltic Sea. Erected in the 13th century, it was long believed that the castle was built as a private residence for the archbishop of Lund...
  
   on the island of Bornholm
  Bornholm
  Bornholm is a Danish island in the Baltic Sea located to the east of the rest of Denmark, the south of Sweden, and the north of Poland. The main industries on the island include fishing, arts and crafts like glass making and pottery using locally worked clay, and dairy farming. Tourism is...
  
  .

Undated

• Market towns are given a monopoly on trade and crafts.
• Møgeltønderhus is granted to Count Hans von Schack who demolishes most of it and builds the current Schackenborg Castle
  Schackenborg Castle
  Schackenborg Castle is a royal residence of the Danish monarch located in Møgeltønder, South Jutland.Originally called Møgeltønderhus the former stronghold on the site was the property of the Roman Catholic bishops of Ribe. It served as protection against the Frisians in the south, and guarded...
  
  .

Deaths

• April 19 – Joachim Gersdorff
  Joachim Gersdorff
  Joachim Gersdorff was a Danish politician, from 1650 to 1660 Steward of the Danish Realm. It was Gersdorff who negotiated the Treaty of Roskilde on Denmark's part during the Second Northern War, a war he had himself been in favour of entering...
  
  , Steward of the Realm (b. 1611)