|Centuries:||17th century – 18th century – 19th century|
|Decades:||1720s 1730s 1740s – 1750s – 1760s 1770s 1780s|
|Years:||1748 1749 1750 – 1751 – 1752 1753 1754|
|1751 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||2504|
|British Regnal year||24 Geo. 2 – 25 Geo. 2|
— to —辛未年十一月十四日
|- Vikram Samvat||1807–1808|
|- Shaka Samvat||1673–1674|
|- Kali Yuga||4852–4853|
|- Ǹrí Ìgbò||751–752|
|Japanese calendar||Kan'en 4Hōreki 1
|Juche calendar||N/A (before 1912)|
|Julian calendar||Gregorian minus 11 days|
|Minguo calendar||161 before ROC
|Thai solar calendar||2294|
|Wikimedia Commons has media related to: 1751|
Year 1751 (MDCCLI) was a common year starting on Friday (link will display the full calendar) of the Gregorian calendar and a common year starting on Tuesday of the 11-day slower Julian calendar. In Britain and its colonies, 1751 only had 282 days due to the Calendar Act of 1750.
- March 25
- April 20 – The future King George III of the United Kingdom succeeds his father as heir-apparent to the British throne (later that year, he's named Prince of Wales). His mother Augusta of Saxe-Gotha becomes Dowager Princess of Wales.
- May 11 – The Pennsylvania legislature grants a charter to Benjamin Franklin and Dr. Thomas Bond for the establishment in Philadelphia of the first hospital in the Colonies.
- July 31 – Fire destroys 1,000 houses in Stockholm.
- August 13 – The Academy and College of Philadelphia, predecessor to the private University of Pennsylvania, opens its doors, with Benjamin Franklin as president.
- September 13 – Kalvária Banská Štiavnica in the Kingdom of Hungary is completed.
- October 27 – The Hōreki period begins in Japan.
- December 3 – Battle of Arnee in India (Second Carnatic War): A British East India Company-led force under Robert Clive defeats and routs a much larger Franco-Indian army under the command of Raza Sahib at Arni.
- Adam Smith is appointed professor of logic at the University of Glasgow.
- University of Glasgow School of Medicine is founded.
- The Encyclopédie is first published.
- Swedish naturalist Carolus Linnaeus publishes his Philosophia Botanica, the first textbook of descriptive systematic botanical taxonomy and the first appearance of his binomial nomenclature.
- Maria Theresa thaler minted; it becomes an international currency.
- 1751–1775 – 13% of appointees to audiencias in the Spanish Empire are Creoles.
- January 12 – Ferdinand I of the Two Sicilies (d. 1825)
- February 20 – Johann Heinrich Voß, German poet (d. 1826)
- March 16 – James Madison, 4th President of the United States (d. 1836)
- May 24 – Charles Emmanuel IV of Savoy, King of Sardinia (d. 1819)
- June 4 – John Scott, 1st Earl of Eldon, Lord Chancellor of Great Britain (d. 1838)
- June 17 – Joshua Humphreys, American naval architect (d. 1838)
- July 11 – Caroline Matilda of Wales (d. 1775)
- July 30 – Mozart's sister Maria Anna Mozart Nickname Nannerl was born at midnight. She is a pianist,singer,composer, and violinist... Her brother is Wolfgang Amadeus Mozart.
- September 1 – Emanuel Schikaneder, German dramatist, actor, and singer. (d. 1812)
- October 30 – Richard Brinsley Sheridan, Irish dramatist and politician (d. 1816)
- date unknown – Thomas Sheraton, English furniture designer (d. 1806)
- January 17 – Tomaso Albinoni, Italian composer (b. 1671)
- January 20 – John Hervey, 1st Earl of Bristol, English politician (b. 1665)
- January 25 – Paul Dudley, Attorney-General of Massachusetts (b. 1675)
- February 5 – Henri François d'Aguesseau, Chancellor of France (b. 1668)
- March 25 – King Frederick I of Sweden (b. 1676)
- March 29 – Thomas Coram, English sea captain and philanthropist (b. c. 1668)
- March 31 – Frederick, Prince of Wales (b. 1707)
- April 19 – Peter Lacy, Irish-born Russian Field marshal (b. 1678)
- June 20 – Adriaan Valckenier, Dutch Governor-General of the Dutch East Indies from 1737 to 1741 (b. 1695)
- August 30 – Christopher Polhem, Swedish scientist (b. 1661)
- October 22 – Prince William IV of Orange (b. 1711)
- October 26 – Philip Doddridge, English religious leader (b. 1702)
- December 12 – Henry St John, 1st Viscount Bolingbroke, English statesman and philosopher (b. 1678)
- December 16 – Leopold II of Anhalt-Dessau, Prussian general (b. 1700)
- December 19 – Louise of Great Britain, queen of Frederick V of Denmark (b. 1724)