|Centuries:||17th century – 18th century – 19th century|
|Decades:||1740s 1750s 1760s – 1770s – 1780s 1790s 1800s|
|Years:||1771 1772 1773 – 1774 – 1775 1776 1777|
|1774 by topic:|
|Arts and Sciences|
|Archaeology – Architecture – Art – Literature (Poetry) – Music – Science|
|Canada – Great Britain –|
|Lists of leaders|
|Colonial governors – State leaders|
|Birth and death categories|
|Births – Deaths|
|Establishments and disestablishments categories|
|Establishments – Disestablishments|
|Ab urbe condita||2527|
|British Regnal year||14 Geo. 3 – 15 Geo. 3|
— to —甲午年十一月廿九日
|- Vikram Samvat||1830–1831|
|- Shaka Samvat||1696–1697|
|- Kali Yuga||4875–4876|
|- Ǹrí Ìgbò||774–775|
|Japanese calendar||An'ei 3
|Juche calendar||N/A (before 1912)|
|Julian calendar||Gregorian minus 11 days|
|Minguo calendar||138 before ROC
|Thai solar calendar||2317|
|Wikimedia Commons has media related to: 1774|
Year 1774 (MDCCLXXIV) was a common year starting on Saturday (link will display the full calendar) of the Gregorian calendar and a common year starting on Wednesday of the 11-day slower Julian calendar.
- January 21 – Mustafa III, Sultan of the Ottoman Empire dies and is succeeded by his brother Abd-ul-Hamid I.
- January 27 – An angry crowd in Boston, Massachusetts seizes, tars and feathers British customs collector and Loyalist John Malcolm for striking a boy and a shoemaker, George Hewes, with his cane.
- March 31 – Intolerable Acts: The British Parliament passes the Boston Port Act, closing the port of Boston, Massachusetts as punishment for the Boston Tea Party.
- April 17 – The first avowedly Unitarian congregation, Essex Street Chapel, is founded in London by Theophilus Lindsey.
- May 10 – Louis XVI becomes King of France following the death of his grandfather, Louis XV.
- June 2 – Intolerable Acts: A new Quartering Act, requiring American colonists to provide better housing for British soldiers upon demand, is passed.
- June 22 – The British pass the Quebec Act, setting out rules of governance for the colony of Quebec in British North America.
- July 21 – Russo-Turkish War (1768–1774): Russia and the Ottoman Empire sign the Treaty of Kuchuk-Kainarji with Russian victory, ending six years of war. The treaty does give Russia the right to intervene in Ottoman politics to protect its Christian subjects.
- August 1 – The element oxygen is discovered for the third (and last) time – the second quantitatively following the somewhat earlier work of Carl Wilhelm Scheele (1771–1772) – by Joseph Priestley, who publishes the fact in 1775 and so names the element and usually gets all the credit.
- September 4 – English explorer James Cook becomes the first European to sight (and name) the island of New Caledonia in Melanesia.
- September 5 – The First Continental Congress assembles in Philadelphia, Pennsylvania.
- September 21 – George Mason and George Washington found the Fairfax County Militia Association, a military unit independent of British control.
- September 29 – Johann Wolfgang von Goethe's semi-autobiographical epistolatory novel The Sorrows of Young Werther (Die Leiden des jungen Werthers) (written January–March) is published anonymously in Leipzig, Germany; it is influential in the Sturm und Drang movement and Romanticism.
- October 10 – Dunmore's War – Battle of Point Pleasant: Cornstalk is forced to make peace with Dunmore at the Treaty of Camp Charlotte, ceding Shawnee land claims south of the Ohio (modern Kentucky) to Virginia.
- October 21 – The word "Liberty" is first displayed on a flag raised by colonists in Taunton, Massachusetts, in defiance of British rule in Colonial America.
- October 25 – Edenton Tea Party takes place in North Carolina, marking the first major gathering of women in support of the American cause.
- To avoid severe flooding, Martinsborough, North Carolina is moved to higher ground 3 miles (4.8 km) west. The North Carolina General Assembly incorporates Martinsborough as the new county seat of Pitt County, 3 years after its founding.
- German cobbler Johann Birkenstock creates the first Birkenstock sandals.
- February 11 – Hans Jarta, Swedish political activist and administrator (d. 1847)
- February 24 – Prince Adolphus, 1st Duke of Cambridge (d. 1850)
- March 9 – Mayhew Folger, whaler, captain of Topaz (ship), rediscovered Pitcairn Islands in 1808 (d. 1828)
- March 16 – Captain Matthew Flinders, English explorer (d. 1814)
- April 24 – Jean Marc Gaspard Itard, French physician (d. 1838)
- July 20 – Auguste Marmont, French marshal (d. 1852)
- August 12 – Robert Southey, English poet and biographer (d. 1843)
- August 18 – Meriwether Lewis, American explorer, soldier and public administrator (d. 1809)
- August 28 – Elizabeth Ann Seton, co-founder of Mount Saint Mary's University, founder of the Sisters of Charity (d. 1821)
- September 5 – Caspar David Friedrich, German artist (d. 1840)
- September 26 – Johnny Appleseed (John Chapman), nurseryman/missionary planted apple-tree nurseries in Ohio, Indiana, and Illinois (d. 1847)
- date unknown
- January 21 – Mustafa III, Ottoman Sultan (b. 1717)
- January 30 – Frantisek Ignac Antonin Tuma, Czech composer (b. 1704)
- February 4 – Charles Marie de La Condamine, French mathematician and geographer (b. 1701)
- February 10 – Florian Leopold Gassmann, German composer (b. 1729)
- April 4 – Oliver Goldsmith, English writer (b. 1730)
- May 4 – Anthony Ulrich II, Duke of Brunswick-Lüneburg (b. 1714)
- May 10 – King Louis XV of France (b. 1710)
- July 1 – Henry Fox, 1st Baron Holland, English statesman (b. 1705)
- July 11 – Sir William Johnson, 1st Baronet, Irish-born New York pioneer
- July 14 – James O'Hara, 2nd Baron Tyrawley and Kilmaine, British field marshal (b. 1682)
- August 11 – Tiphaigne de la Roche, French writer (b. 1722)
- August 14 – Johann Jakob Reiske, German scholar and physician (b. 1716)
- August 25 – Niccolò Jommelli, Italian composer (b. 1714)
- September 22 – Pope Clement XIV (b. 1705)
- September 25 – John Bradstreet, Canadian-born soldier (b. 1714)
- October 16 – Robert Fergusson, Scottish poet (b. 1750)
- October 23 – Michel Benoist, French Jesuit missionary and scientist (b. 1715)
- October 26 – Roemer Vlacq II, Dutch vice-admiral (b. 1712)
- November 22 – Robert Clive, 1st Baron Clive, British general and statesman (b. 1725)
- December 2 – Johann Friedrich Agricola, German composer (b. 1720)
- December 16 – François Quesnay, French economist (b. 1694)