|Centuries:||16th century – 17th century – 18th century|
|Decades:||1580s 1590s 1600s – 1610s – 1620s 1630s 1640s|
|Years:||1615 1616 1617 – 1618 – 1619 1620 1621|
|1618 by topic:|
|Arts and Science|
|Architecture - Art - Literature - Music - Science|
|Lists of leaders|
|Colonial governors - State leaders|
|Birth and death categories|
|Births - Deaths|
|Establishments and disestablishments categories|
|Establishments - Disestablishments|
|Ab urbe condita||2371|
|English Regnal year||15 Ja. 1 – 16 Ja. 1|
|Chinese calendar||丁巳年 (Fire Snake)
4314 or 4254
— to —
戊午年 (Earth Horse)
4315 or 4255
|- Vikram Samvat||1674–1675|
|- Shaka Samvat||1540–1541|
|- Kali Yuga||4719–4720|
|Japanese calendar||Genna 4
|Julian calendar||Gregorian minus 10 days|
|Minguo calendar||294 before ROC
|Thai solar calendar||2160–2161|
|Wikimedia Commons has media related to 1618.|
1618 (MDCXVIII) was a common year starting on Monday (dominical letter G) of the Gregorian calendar and a common year starting on Thursday (dominical letter D) of the Julian calendar, the 1618th year of the Common Era (CE) and Anno Domini (AD) designations, the 618th year of the 2nd millennium, the 18th year of the 17th century, and the 9th year of the 1610s decade. Note that the Julian day for 1618 is 10 calendar days difference, which continued to be used from 1582 until the complete conversion of the Gregorian calendar was entirely done in 1929.
- March 8 – Johannes Kepler discovers the third law of planetary motion (he soon rejects the idea after some initial calculations were made but on May 15 confirms the discovery).
- May 23 – The Second Defenestration of Prague – Protestant noblemen hold a mock trial and throw two direct representatives of Ferdinand II of Germany (Imperial Governors) and their scribe out of a window into a pile of manure, exacerbating a low-key rebellion into the Bohemian Revolt (1618–1621) precipitating the Thirty Years' War into armed conflict and further polarizing Europe on religious grounds.
- June 14 – Joris Veseler prints the first Dutch newspaper Courante uyt Italien, Duytslandt, &c. in Amsterdam (approximate date).
- July 20 – Pluto reaches, according to sophisticated mathematical calculations, its second most recent aphelion. The next one occurs in 1866, and the following one will occur 2113.
- August 29 – Johan van Oldenbarnevelt and Hugo Grotius are imprisoned by Maurice, Prince of Orange.
- September 4 – Rodi avalanche: A rock- or snowslide buries the Alpine town of Piuro, claiming 2,427 victims.
- September 18 – Beginning of the 13th Baktun in the Mesoamerican Long Count calendar (18.104.22.168.0).
- September 19–November 21 – Thirty Years' War: The Siege of Pilsen takes place.
- October 9 – Residents of Mogilev revolt against the Uniate bishop Josaphat Kuntsevych.
- October 29 – English adventurer, writer and courtier Sir Walter Raleigh is beheaded at the Palace of Westminster for allegedly conspiring treasonably against James I of England in 1603, following pressure from the Spanish government over his attack on their settlement on the Orinoco on his last (1617–18) voyage.
- November 13 – The Synod of Dort has its first meeting.
- December 11 – Russia and Poland sign the Truce of Deulino.
- The margraves of Brandenburg are granted Polish approval to inherit the Duchy of Prussia, creating the state of Brandenburg-Prussia.
- Osman II deposes his uncle Mustafa I as Ottoman emperor (until 1622).
- The 3,000 seat Teatro Farnese, the first permanent proscenium theatre, is built into the Great Hall of the Palazzo della Pilotta in Parma, Italy.
- The Ming Chinese embassy of the Wanli Emperor presents tea to the Russian tsar.
- January 1 – Bartolomé Esteban Murillo, Spanish painter (d. 1682)
- January 2 – Jean Hamon (doctor), French doctor and writer (d. 1687)
- January 3 – Jean Crasset, French Jesuit theologian (d. 1692)
- January 8 – Madeleine Béjart, actress, theatre director (d. 1672)
- January 14 – Jan Six, Dutch politician (d. 1700)
- January 28 – James Ley, 3rd Earl of Marlborough, English nobleman, sailor and mathematician (d. 1665)
- January 29 – Jean Paul Médaille, French Jesuit missionary (d. 1689)
- February 12 – Olaus Verelius, Scholar of Old Norse and Scandinavian studies (d. 1682)
- February 19 – Johannes Phocylides Holwarda, Dutch astronomer (d. 1651)
- March 4 – George Louis, Prince of Nassau-Dillenburg, German noble (d. 1656)
- April 2 – Francesco Maria Grimaldi, Italian mathematician and physicist (d. 1663)
- April 4 – Ferrante III Gonzaga, Duke of Guastalla (d. 1678)
- April 9 – Christian, Duke of Brieg (d. 1672)
- April 13 – Roger de Rabutin, Comte de Bussy, French writer (d. 1693)
- April 14 – Thomas Moore (died 1695), English politician (d. 1695)
- April 29 – Vittoria Farnese d'Este, Duchess of Modena and Reggio (d. 1649)
- May 22 – Henrik Horn, freiherr (d. 1693)
- June 1 – Johann Franck, German poet and hymnist (d. 1677)
- June 15
- June 24 – Philip Packer, British barrister and architect (d. 1686)
- June 28 – Jean Le Pautre, French designer and engraver (d. 1682)
- July 6 – Alexander Lindsay, 1st Earl of Balcarres, Scottish nobleman (d. 1659)
- July 17 – George Stewart, 9th Seigneur d'Aubigny, Nobleman and military commander (d. 1642)
- July 21 – Hayashi Gahō, Japanese philosopher (d. 1688)
- July 22 – Johan Nieuhof, Dutch explorer and administrator (d. 1672)
- September 6 – Walter Hoyt, Connecticut settler (d. 1698)
- September 9 – Joan Cererols, Catalan composer and Benedictine (d. 1680)
- September 14 – Peter Lely, Dutch painter (d. 1680)
- September 27 – Jacob Alting, Dutch linguist (d. 1679)
- September 29 – Michiel Sweerts, painter (d. 1664)
- October 8 – Claude Lamoral, 3rd Prince of Ligne, Belgian nobleman (d. 1679)
- October 31 – Mariana de Jesús de Paredes (d. 1645)
- November 3 – Aurangzeb, Mughal emperor of India (d. 1707)
- November 8 – Louise de La Fayette, French courtier, friend of King Louis XIII (d. 1665)
- November 12 – Gottfried Welsch, German physician (d. 1690)
- November 26 – Johan Frederik von Marschalck, German-born landowner, Chancellor of Norway (d. 1679)
- November – Simon Arnauld, Marquis de Pomponne, French diplomat and minister of Louis XIV (d. 1699)
- December 2
- December 3 – Sir William Ayloffe, 3rd Baronet, officer in the Royalist army during the English Civil War (d. 1662)
- December 18 – Karl Kaspar von der Leyen (d. 1676)
- December 26 – Elisabeth of the Palatinate, German princess, philosopher, and Calvinist (d. 1680)
- December 28 – Catharina Hooft, woman of the Dutch Golden Age (d. 1691)
- date unknown
- February 20 – Philip William, Prince of Orange (b. 1554)
- March 23 – James Hamilton, 1st Earl of Abercorn, Scottish politician (b. c. 1575)
- June 7 – Thomas West, 3rd Baron De La Warr, English Governor of Virginia (b. 1577)
- August 23 – Gerbrand Adriaenszoon Bredero, Dutch writer (b. 1585)
- September 28 – Joshua Sylvester, English poet (b. 1563)
- October 29 – Sir Walter Raleigh, English courtier and settler of Virginia (executed) (b. 1554)
- November 2 – Maximilian III, Archduke of Austria (b. 1558)
- December 6 – Jacques Davy Duperron, French cardinal (b. 1556)
- December 10 – Giulio Caccini, Italian composer (b. 1551)
- probable – Chief Powhatan (proper name Wahunsenacawh), father of Pocahontas (b. c. 1547)