Events of 1625

January - June

• March 27 - Charles Stuart (Charles I of England, Scotland and Ireland) succeeds James I of England.
• April 4 - Stadtholder Frederick Henry marries Amalia, Countess von Solms-Braunfels.
• April 7 - Albrecht von Wallenstein is appointed German supreme commander.
• May 1
• a Portuguese-Spanish expedition recaptures Salvador (Bahia).
• Prince Frederick Henry is appointed stadtholder of Holland.
• May 11 - Boers besiege the Frankenburg estate in Upper Austria.
• May 15/16 - Rebellious farmers are hanged in Vocklamarkt, Upper Austria.
• June 2 - Prince Frederick Henry is sworn in as the stadtholder of Holland and Zealand.
• June 5 - Spanish troops under Spinola conquer Breda.
• June 13 - King Charles I of England marries Henrietta Maria, Princess of France and Navarre.
• June 15 - Breda surrenders to the Spanish troops of general Ambrogio de Spinola.
• June 18 - The English Parliament refuses to vote Charles I the right to collect customs duties for his entire reign, restricting him to one year instead.

July - December

• August 6 - Earl Ernest Casimir is appointed as stadtholder of Groningen.
• August 16 - Ernest Casimir of Nassau-Dietz is appointed stadtholder of Drenthe.
• September 13 - A total of 16 rabbis (including Isaiah Horowitz) are imprisoned in Jerusalem.
• September 24 - The Dutch attack San Juan, Puerto Rico.
• October 8 - Admiral George Villiers' fleet sails from Plymouth, England to Cadiz.
• December 9 - The Netherlands and England sign a military peace treaty.

Undated

• William Oughtred invents the slide rule.
• James Ussher becomes Archbishop of Armagh.
• The Dutch settle Manhattan, founding the town of New Amsterdam. The town would transform into a piece of what is now New York City.
• The First Savoine War is fought between the Republic of Genoa and the Duchy of Savoy.
• The Bohemian Revolt ends.
• Danish intervention starts.
• A Huguenot revolt is suppressed.

Births

• June 8 - Giovanni Domenico Cassini, Italian astronomer and engineer (d. 1712)
• July 10 - Jean Herauld Gourville, French adventurer (d. 1703)
• August 13 - Rasmus Bartholin, Danish physician and scientist (d. 1698)
• August 14 - François de Harlay de Champvallon, Archbishop of Paris (d. 1695)
• August 20 - Thomas Corneille, French dramatist (d. 1709)
• September 24 - Johan de Witt, Dutch politician (d. 1672)
• October 4 - Jacqueline Pascal, French child prodigy and sister of Blaise Pascal (d. 1661)
• November 30 - Jean Domat, French jurist (d. 1696)
• December 14 - Barthélemy d'Herbelot de Molainville, French orientalist (d. 1695)

See also 1625 births.

Deaths

• January 7 - Ruggiero Giovannelli, Italian composer
• March 7 - Johann Bayer, German astronomer (b. 1572)
• March 25 - Giambattista Marini, Italian poet (b. 1569)
• March 27 - King James I of England and Ireland/James VI of Scotland (b. 1566)
• March 29 - Antonio de Herrera y Tordesillas, Spanish historian (b. 1549)
• April 23 - Maurice of Nassau, Prince of Orange (b. 1567)
• April 27 - Mori Terumoto, Japanese warrior (b. 1553)
• June 1 - Honoré d'Urfé, French writer (b. 1568)
• June 5 - Orlando Gibbons, English composer and organist (b. 1583)
• August - John Fletcher, English writer (b. 1579)
• September 20 - Heinrich Meibom, German historian and poet (b. 1555)
• September 26 - Thomas Dempster, Scottish historian (b. 1579)
• October 22 - Kikkawa Hiroie, Japanese politician (b. 1561)
• December 9 - Ubbo Emmius, Dutch historian and geographer (b. 1547)
• date unknown
• Robert Cushman, Plymouth Colony settler (b. 1578)
• Willem Schouten Dutch navigator (b. 1567?)

See also 1625 deaths.