| January 9 | Russia and Turkey sign Peace of Jassy |
| February 7 | Austria and Prussia sign anti-French covenant |
| February 7 | D Cimarosa's opera "Il Matrimonio Segreto," premieres in Vienna |
| February 20 | U.S. postal service created; postage 6 cents -12 cents, depending on distance |
| February 21 | Congress passes President Succession Act |
| February 23 | Humane Society of Massachusetts incorporated (erected life-saving stations for distressed mariners) |
| February 23 | Joseph Haydn's 94th Symphony in G, premieres |
| March 1 | U.S. Presidential Succession Act passed |
| March 4 | Oranges introduced to Hawaii |
| March 16 | Murder attempt on King Gustavus III by count Ankarstrom at opera |
| March 24 | Benjamin West (U.S.) becomes president of Royal Academy of London |
| April 1 | Gronings feminist Etta Palm demands women's right to divorce |
| April 2 | Congress establishes Philadelphia mint |
| April 2 | U.S. authorizes $10 Eagle, $5 half-Eagle and 2.50 quarter-Eagle gold coins and silver dollar, dollar, quarter, dime and half-dime |
| April 5 | George Washington casts 1st presidential veto |
| April 14 | France declares war on Austria, starting French Revolutionary Wars |
| April 20 | France declares war on Austria, Prussia and Sardinia |
| April 24 | "La Marseillaise" composed by Claude-Joseph Rouget de Lisle |
| April 25 | Guillotine 1st used, executes highwayman Nicolas J Pelletier |
| May 7 | Captain Robert Gray discovers Grays Harbor (Washington) |
| May 8 | British Captain George Vancouver sights, names Mount Rainier, Washington |
| May 8 | U.S. establishes military draft |
| May 11 | Columbia River discovered and named by U.S. Captain Robert Gray |
| May 12 | Toilet that flushes itself at regular intervals is patented |
| May 16 | Denmark abolishes slave trade |
| May 17 | 24 merchants form New York Stock Exchange at 70 Wall Street |
| May 19 | Russian army enters Poland |
| June 1 | Kentucky admitted as 15th U.S. state |
| June 4 | Captain George Vancouver claims Puget Sound for Britain |
| June 12 | George Vancouver discovers site of Vancouver BC |
| June 13 | King Louis XVI fires French government |
| June 21 | Vancouver meets Spanish ships Sutil and Mexicana off Vancouver, BC |
| July 8 | France declares war on Prussia |
| July 11 | Prussia army moves into French territory |
| July 25 | Dutch patriots exiles finds "Bataafs Legion" |
| July 30 | 500 Marseillaisian men sing France's national anthem for 1st time |
| July 31 | Cornerstone laid for 1st U.S. government building: U.S. Mint in Philadelphia |
| August 10 | Mobs in Paris attack palace of Louis XVI |
| August 13 | Revolutionaries imprison French royals including Marie Antoinette |
| August 29 | English warship Royal George capsizes in Spithead; kills 900 |
| September 2 | Paris masses remove nobles/clergymen out of jails and slaughter them |
| September 20 | French defeat Prussians at Valmy |
| September 21 | 1st French Republic forms |
| September 21 | Proposal by Collot D'Herbois, to abolish the monarchy in France |
| September 22 | Origin of French Republican Era |
| October 2 | Baptist Missionary Society forms in London |
| October 12 | Columbus Day is 1st celebrated |
| October 13 | 1st Old Farmer's Almanac is published |
| October 13 | Washington lays cornerstone of Executive Mansion (White House) |
| November 6 | Battle at Jemappes: French army beats Ausrtrians |
| November 14 | Captain George Vancouver is 1st Englishman to enter San Francisco Bay |
| November 25 | Farmer's Almanac 1st published |
| December 5 | George Washington re-elected U.S. president |
| December 8 | 1st cremation in U.S., Henry Laurens |
| December 11 | France's King Louis XVI went on trial, accused of treason |
| December 12 | In Vienna, Ludwig Von Beethoven (22) receives 1st lesson in music composition from Franz Joseph Haydn |
| December 15 | 1st life insurance policy issued in U.S. in Philadelphia |
| December 17 | Opening of 1st legislative assembly of Lower Canada in Quebec city |
