1828
* 4 January - France: The Vicomte de Martignac succeeds the Comte de Villèle as Prime Minister of France.
* 11 April - Foundation of Bahia Blanca
* 26 May - Feral child: Kaspar Hauser is discovered in Nuremberg, Germany.
* 23 June - Portugal: King Miguel I overthrows his niece Queen Maria II, beginning the Liberal Wars.
* 27 August - South America: Brazil and Argentina recognize the independence of Uruguay.
* 3 December - U.S. presidential election: Andrew Jackson is elected President of the United States.
* Science: Friedrich Wöhler synthesizes Urea, disproving a cornerstone of vitalism.
* Treaty of Turkamanchai: Russia captures Eastern Armenia from Persia.
1829
* 19 January - Johann Wolfgang von Goethe's Faust premieres.
* 4 March - USA: Andrew Jackson succeeds John Quincy Adams as the President of the United States of America.
* 12 March - First Oxford and Cambridge boat race held on the River Thames in London.
* 1 June - The Philadelphia Inquirer is founded as The Pennsylvania Inquirer.
* 3 June - The Swan River Colony (later to become the cities of Perth and Fremantle) is founded in Western Australia. This secures the western 'third' of the Australian landmass for the British.
* 5 June - Slave trade: HMS Pickle captures the armed slave ship Voladora off the coast of Cuba.
* 10 June - Oxford University Boat Club win the very first boat race.
* 11 June - June Uprising of Belgian separatists in the Netherlands.
* 19 June - June Uprisings end as king William I. promises less Dutchification and more freedom.
* 23 July - In the United States, William Burt obtains the first patent for a writing mechanism.
* 8 August - France: The Prince de Polignac succeeds the Vicomte de Martignac as Prime Minister of France.
* 1 October - South Africa: University of Cape Town founded.
* 8 October - Rail transport: The Rocket wins The Rainhill Trials.
* 17 October - Hooded man assassinates Kaspar Hauser
* 4 December - India: In the face of fierce opposition, British Lord William Bentinck carries a regulation declaring that all who abetted suttee in India were guilty of culpable homicide.
1830
* 6 April - Founding of the Church of Jesus Christ of Latter-day Saints in Fayette, New York by Joseph Smith, Jr. and five others.
* 13 May - Ecuador separates from Gran Colombia.
* 28 May - US congress passes the Indian Removal Act
* 26 June - William IV succeeds George IV as King of the United Kingdom.
* 6 July - France invades Algeria over the banana affair.
* 17 July - Barthélemy Thimonnier is granted a patent (#7454) for a sewing machine in France. It chains stitches at 200/minute.
* 18 July - Uruguay adopts its first constitution.
* 27 July - France: Begin of the July Revolution.
* 9 August - France: Louis Philippe becomes King of the French.
* 13 August - France: Duc de Broglie becomes Prime Minister.
* 31 August - Edwin Beard Budding is granted a patent for the invention of lawnmower.
* 15 September - Liverpool and Manchester Railway opened (world's first intercity passenger railway operated solely by steam locomotives).
* 1 October - Dissatisfaction with the (although in many parts fulfilled) promises of the king spark the Belgian Revolution
* 4 October - The Provisional Government in Brussels declares the creation of the independent state of Belgium, in revolt against the government of the Netherlands.
* 2 November - France: Jacques Laffitte succeeds the Duc de Broglie as Prime Minister
* 8 November - Ferdinand II becomes King of the Two Sicilies
* 22 November - The Whig Charles Grey, 2nd Earl Grey succeeds Arthur Wellesley, 1st Duke of Wellington as Prime Minister of the United Kingdom
* 29 November - Beginning of a major Polish insurrection in Warsaw against Russian rule.
* 5 December - World premiere of Hector Berlioz's most famous work, Symphonie Phantastique, in Paris.
* 20 December - Recognition of the Independence of Belgium by the Great Powers.
1831
* February-March - Revolts in Modena, Parma and the Papal States are put down by Austrian troops.
* 14 February - Ras Marye of Yejju marches into Tigray and defeats and kills the warlord Sabagadis in the Battle of Debre Abbay.
* 20 February - Battle of Grochow. Polish rebel forces divide a Russian army.
* 10 March - French Foreign Legion founded.
* 29 March - The Great Bosnian uprising
* 1 April - American President Andrew Jackson dies. John C. Calhoun becomes the new president.
* 7 April - Pedro I of Brazil abdicates as emperor of Brazil in favor of his son Pedro II of Brazil.
* 26 May - Battle of Ostroleka. The Poles fight another indecisive battle.
* 21 July - Inauguration of Léopold I of Belgium, first king of the Belgians.
* 10 August - Dutch invasion of Belgium. It is repelled by a French army (seven-day campaign).
* 21 August - USA: Outbreak of Nat Turner's slave rebellion in Southampton County, Virginia.
* 6 September- Battle of Warsaw - The Russians take the Polish capital and crush resistance.
* 27 December - Charles Darwin embarks on his historic journey aboard the HMS Beagle.