1854
Events
January–March
- January 4 - The McDonald Islands are discovered by Captain William McDonald aboard the Samarang.
- January 6 - The fictional detective Sherlock Holmes is perhaps born.
- January 9 - The Teutonia Männerchor in Pittsburgh is founded to promote German culture.
- January 20 - The North Carolina General Assembly in the United States charters the Atlantic and North Carolina Railroad, to run from Goldsboro through New Bern, to the newly created seaport of Morehead City, near Beaufort.
- January 21 - The iron clipper runs aground off the east coast of Ireland, on her maiden voyage out of Liverpool, bound for Australia, with the loss of at least 300 out of 650 on board.
- February 11 - Major streets are lit by coal gas for the first time by the San Francisco Gas Company; 86 such lamps are turned on this evening in San Francisco, California.
- February 13 - Mexican troops force William Walker and his troops to retreat to Sonora.
- February 14 - Texas is linked by telegraph with the rest of the United States, when a connection between New Orleans and Marshall, Texas is completed.
- February 17 - The British recognize the independence of the Orange Free State in Southern Africa; its official independence is declared six days later in the Orange River Convention.
- February 27 - Britain sends Russia an ultimatum to withdraw from two Romanian provinces it has conquered, Moldavia and Wallachia.
- March 1
- * The British Inman Line's sets out from Liverpool on passage to the United States with 480 on board; she is lost without a trace.
- * German psychologist Friedrich Eduard Beneke disappears; 2 years later his remains are found in the canal near Charlottenburg.
- * The Plan de Ayutla calls for liberal reforms and the ouster of President Antonio López de Santa Anna of Mexico.
- March 3 - Australia's first telegraph line, linking Melbourne and Williamstown, Victoria, opens.
- March 11 - A Royal Navy fleet sails from Britain, under Vice Admiral Sir Charles Napier.
- March 20 - In the United States:
- * The Boston Public Library opens to the public.
- * The Republican Party is formed by anti-slavery opponents of the Kansas–Nebraska Act in Ripon, Wisconsin.
- March 24 - Slavery is abolished in Venezuela.
- March 27 - Crimean War: The United Kingdom declares war on Russia.
- March 28 - Crimean War: France declares war on Russia.
- March 31 - United States Navy Commodore Matthew C. Perry signs the Convention of Kanagawa with the Japanese government, opening the ports of Shimoda and Hakodate to American trade.
- March - The British East India Company annexes Jhansi State in India under the doctrine of lapse.
April–June
- April 1 - Hard Times begins serialisation in Charles Dickens' magazine, Household Words.
- April 16 - The United States packet ship Powhattan is wrecked off the New Jersey shore, with more than 200 victims.
- May 5–15 - Hokkien–Teochew Riots in Singapore.
- May 18 - The Catholic University of Ireland is founded.
- May 27 - Taiping Rebellion: United States diplomatic minister Robert McLane arrives at the Heavenly Capital aboard the.
- May 30 - The Kansas–Nebraska Act becomes law, creating the Kansas Territory and the Nebraska Territory, west of the State of Missouri and the State of Iowa. The Kansas–Nebraska Act also establishes that these two new Territories will decide either to allow or disallow slavery, depending on balloting by their residents.
- June 10 - The first class of the United States Naval Academy graduates at Annapolis, Maryland.
- June 21 - Battle of Bomarsund in Åland off the coast of Finland: British Royal Navy seaman's mate Charles Davis Lucas throws a live Russian artillery shell overboard by hand before it explodes, for which he is awarded the first Victoria Cross in 1857.
- June - The Grand Excursion takes prominent Eastern United States inhabitants from Chicago to Rock Island, Illinois, by railroad, then up the Mississippi River to Saint Paul, Minnesota, by steamboat.
July–September
- July 4 - James Ambrose Cutting takes out the first of his three United States patents for improvements to the wet plate collodion process.
- July 6 - In Jackson, Michigan, the first convention of the U.S. Republican Party is held.
- July 7 - The Bombay Spinning and Weaving Company is established as the first cotton mill in India by Cowasjee Nanabhoy Davar and associates.
- July 13 - Mohamed Sa'id Pasha succeeds his nephew Abbas as the Wāli of Egypt and Sudan, then a province of the Ottoman Empire.
- July 17 - The Bienio progresista revolutionary coup occurs in Spain.
- July 19 - Wood's despatch is sent by Charles Wood, 1st Viscount Halifax to Lord Dalhousie, Governor General of India, proposing radical improvements to the Indian educational system.
- August 9 - Johann succeeds to the throne of Saxony, on the death of his brother.
- August 16 - Battle of Bomarsund: Russian troops on the island of Bomarsund, in Åland, surrender to French–British troops.
- August 19 - John Lawrence Grattan leads 29 United States troops and a civilian interpreter in attack on Lakota village over dispute involving emigrant cow. Grattan's command was annihilated.
- August 27 - English lawyer Alfred Wills and party set out for the first ascent of the Wetterhorn in Switzerland, regarded as the start of the "golden age of alpinism".
- August 31-September 8 - An epidemic of cholera in London kills over 10,000. Dr John Snow traces the source of one outbreak to a single water pump, validating his theory that cholera is water-borne, and forming the starting point for epidemiology.File:Snow-cholera-map.jpg|thumb|Original map by Dr John Snow showing the clusters of cholera cases in the London epidemic of 1854
- September 9 - British Inman Line's is wrecked off Cape Race on her maiden voyage without loss of life.
- September 20 - Crimean War: Battle of Alma - The French–British alliance wins the first major land engagement of the war.
- September 27 - SS Arctic disaster: The American paddle steamer sinks after a collision with the much smaller French ship, 50 miles off the coast of Newfoundland, with approximately 320 deaths.
October–December
- October 1 - The watch company founded in 1850 in Roxbury, Massachusetts, by Aaron Lufkin Dennison, relocates to Waltham, to become the Waltham Watch Company, pioneer in the American system of watch manufacturing.
- October 6 - The great fire of Newcastle and Gateshead in England is ignited by a spectacular explosion.
- October 9-11 - United States diplomats in Europe meet and draft the Ostend Manifesto, setting out a rationale for the U.S. to acquire Cuba from Spain.
- October 17 - The Age newspaper is founded in Melbourne, Australia.
- October 25 - Crimean War: Battle of Balaclava - The allies gain an overall victory, except for the disastrous cavalry Charge of the Light Brigade, from which only 200 of 700 men survive.
- November 5 - Crimean War: Battle of Inkerman - The Russians are defeated.
- November 14 - Great Storm of 1854 in the Black Sea: 19 British transport and other ships supporting the Crimean War are wrecked with the loss of at least 287 men.
- November 17 - In Egypt, the Suez Canal Company is formed.
- November
- * Florence Nightingale and her team of 38 trained volunteer nurses, having set out on October 21 from England, arrive at Selimiye Barracks in Scutari in the Ottoman Empire, to care for British Army troops wounded in the Crimean War.
- * The Mute Rebellion breaks out in Sweden.
- December 3 - The Eureka Stockade Miners' Rebellion breaks out in Ballarat, Victoria.
- December 9 - Pope Pius IX in the apostolic constitution Ineffabilis Deus defines ex Cathedra the dogma of Immaculate Conception, which holds that the Blessed Virgin Mary was conceived without original sin.
- December 10 - Sa'id Pasha officially abolishes slavery in Egypt.
Undated
- Bryant & Stratton College is founded as a business institute in the United States.
- Ignacy Łukasiewicz drills the world's first oil well in Poland, in Bóbrka near Krosno County.
- Professor Benjamin Silliman of Yale University is the first person to fractionate petroleum into its individual components, by distillation.
- The Icelandic trade is opened to merchants other than Danes.
- A Russian fort is established at the modern-day site of Almaty.
- The French fashion label Louis Vuitton is founded.
- The future Waterbury Clock Company is founded as a department within the Benedict and Burnham Manufacturing Company in Waterbury, Connecticut, the predecessor of Timex Group USA in timepiece manufacturing.
Births
January–March
- January 1 - James George Frazer, Scottish social anthropologist
- January 8 - Samuel Liddell MacGregor Mathers, British occultist
- January 9 - Lady Randolph Churchill, born Jennie Jerome, American-born British socialite and mother of Winston Churchill
- January 12
- *Kataoka Shichirō, Japanese admiral
- *David Macpherson, Canadian-born American civil engineer
- January 14 - Nikolai Pavlovich Bobyr, Russian general
- February 9
- * Edward Carson, Irish Unionist MP and barrister
- * Aletta Jacobs, Dutch physician and women's suffrage activist
- February 16 - Charles Webster Leadbeater, British theosophist
- February 17 - Friedrich Alfred Krupp, German industrialist
- February 26 - Mary M. Cohen, American social economist
- March 4 - Tomás António Garcia Rosado, Portuguese general
- March 10
- * Florence Carpenter Ives, American journalist and editor
- * Stanisław Tondos, Polish painter
- March 11 - Jane Meade Welch, American historian
- March 14 – Paul Ehrlich, German physician and scientist, recipient of the 1908 Nobel Prize in Physiology or Medicine
- March 15 - Emil von Behring, German physiologist, winner of the 1901 Nobel Prize in Physiology or Medicine
- March 18 - Nikolai Ruzsky, Russian general
- March 30 - Hermann Kövess von Kövessháza, Austro-Hungarian field marshal