1st January » The British Board of Film Classification e.g British Board of Censors is established.
5th January » First Balkan War: During the Battle of Lemnos (1913) named Battle of Lemnos, Greece called Greek admiral Pavlos Kountouriotis forces the Turkish fleet to retreat to its base within the Dardanelles, from which it did not venture for the rest of the war.
13th January » Delta Sigma Theta Sorority Incorporated was founded on the campus of Howard University.
17th January » Raymond Poincaré is elected President of France.
30th January » The British House of Lords rejects the Government of Ireland Act 1914 called Irish Home Rule Bill.
2nd February » Grand Central Terminal is opened in New York City.
3rd February » The Sixteenth Amendment to the United States Constitution is ratified, authorizing the Federal government of the United States named Federal government to impose and collect an income tax.
5th February » Hellenic Air Force Greek military aviators, Michael Moutoussis and Aristeidis Moraitinis (aviator) Aristeidis Moraitinis perform the first Naval Aviation naval air mission in history, with a Farman MF.7 hydroplane.
9th February » A group of meteors Meteor procession of February 9, 1913 called is visible across much of the eastern seaboard of North and South America, leading astronomers to conclude the source had been a small, short-lived natural satellite of the Earth.
17th February » The Armory Show opens in New York City, displaying works of artists who are to become some of the most influential painters of the early 20th century.
18th February » Pedro Lascuráin becomes President of Mexico for 45 minutes; this is the shortest term to date of any person as president of any country.
21st February » Ioannina is incorporated into the Greek state after the Balkan Wars.
3rd March » Thousands of women march in a Woman Suffrage Parade of 1913 called suffrage parade in Washington, D.C.
4th March » First Balkan War: The Greek army Battle of Bizani or engages the Turks at Bizani, resulting in victory two days later.
4th March » The United States Department of Labor is formed
12th March » Canberra Day: The future capital of Australia is officially named Canberra. (Melbourne remains temporary capital until 1927 while the new capital is still under construction.)
18th March » King George I of Greece is assassination called assassinated in the recently liberated city of Thessaloniki.
20th March » Sung Chiao-jen, a founder of the Kuomintang named Chinese Nationalist Party, is wounded in an assassination attempt and dies 2 days later.
21st March » Over 360 are killed and 20,000 homes destroyed in the Great Dayton Flood in Dayton, Ohio.
26th March » Balkan War: Bulgarian forces Battle of Adrianople (1913) called capture Adrianople.
28th March » Guatemala becomes a signatory to the Buenos Aires Convention known as Buenos Aires copyright treaty.
31st March » The Vienna Concert Society rioted during a performance of modernist music by Arnold Schoenberg, Alban Berg, Alexander von Zemlinsky, and Anton von Webern, causing a premature end to the concert due to violence; this concert became known as the Skandalkonz
4th April » First Balkan War: Greek aviator Emmanouil Argyropoulos becomes the first pilot to die in the Hellenic Air Force when his plane crashes.
8th April » The 17th Amendment to the United States Constitution, requiring direct election of United States Senate e.g Senators, becomes law.
24th April » The Woolworth Building skyscraper in New York City is opened.
3rd May » 'Raja Harishchandra' the first full-length Indian feature film is released, marking the beginning of the Cinema of India or Indian film industry.
14th May » Governor of New York William Sulzer approves the charter for the Rockefeller Foundation, which begins operations with a $100 million donation from John D. Rockefeller.
30th May » First Balkan War: the Treaty of London (1913), is signed ending the war. Albania becomes an independent nation.
1st June » The Greek-Serbian Alliance of 1913 called Greek–Serbian Treaty of Alliance is signed, paving the way for the Second Balkan War.
15th June » The Battle of Bud Bagsak in the Philippines ends.
19th June » Natives Land Act, 1913 in South Africa implemented.
23rd June » Second Balkan War: The Greece known as Greeks defeat the Bulgarians in the Battle of Doiran (1913) named Battle of Doiran.
24th June » Greece and Serbia annul their alliance with Bulgaria.
25th June » American Civil War veterans begin arriving at the Great Reunion of 1913.
4th July » President of the United States called President Woodrow Wilson addresses American Civil War veterans at the Great Reunion of 1913.
10th July » Death Valley National Park Death Valley, California, hits convert 134 °F, the highest temperature recorded in the United States.
12th July » Second Balkan War: Kingdom of Serbia Serbian forces begin their Siege of Vidin (1913) siege of the Kingdom of Bulgaria Bulgarian city of Vidin; the siege is later called off when the war ends.
29th July » The Norwegian football club Vålerenga Fotball was founded.
31st July » The Balkans named Balkan States sign an armistice in Bucharest.
3rd August » A major labour dispute, known as the Wheatland Hop Riot, starts in Wheatland, California.
10th August » Second Balkan War: delegates from Bulgaria, Romania, Serbia, Montenegro, and Greece sign the Treaty of Bucharest (1913) called Treaty of Bucharest, ending the war.
13th August » Otto Witte, an Acrobatics e.g acrobat, is purportedly crowned King of Albania.
13th August » First production in the UK of stainless steel by Harry Brearley.
16th August » Tōhoku Imperial University of Japan (modern day Tohoku University) becomes the first university in Japan to admit female students.
16th August » Completion of the Royal Navy battlecruiser HMS known as Queen Mary.
28th August » Wilhelmina of the Netherlands e.g Queen Wilhelmina opens the Peace Palace in The Hague.
31st August » Police attack a union rally during the Dublin Lock-out, killing two people and injuring hundreds.
23rd September » Roland Garros (aviator) or Roland Garros of France becomes the first to fly in an airplane across the Mediterranean (from St. Raphael France to Bizerte, Tunisia).
9th October » Steamship SS Volturno 1906 6 catches fire in the mid-Atlantic.
10th October » President of the United States known as President Woodrow Wilson triggers the explosion of the Gamboa Dike thus ending construction on the Panama Canal.
31st October » Dedication of the Lincoln Highway, the first automobile highway across United States.
31st October » The Indianapolis Street Car Strike of 1913 called Indianapolis Street Car Strike and subsequent riot begins.
5th November » King Otto of Bavaria is deposed by his cousin, Prince Regent Ludwig, who assumes the title Ludwig III of Bavaria or Ludwig III.
6th November » Mahatma Gandhi called Mohandas Gandhi is arrested while leading a march of Indian miners in South Africa.
7th November » The first day of the Great Lakes Storm of 1913, a massive blizzard that ultimately killed 250 and caused over $5 million (about $118,098,000 in 2013 dollars) damage. Winds reach hurricane force on this date.
9th November » The Great Lakes Storm of 1913, the most destructive natural disaster ever to hit the lakes, destroys 19 ships and kills more than 250 people.
1st December » The Buenos Aires Metro, the first underground railway system in the southern hemisphere and in Latin America, begins operation.
1st December » The Ford Motor Company introduces the first moving assembly line.
1st December » Crete, having obtained self rule from Turkey after the First Balkan War, is annexed by Greece.
14th December » ship Japanese battleship Haruna 2, the fourth and last sclass- Kongō battlecruiser 0 ship, launches, eventually becoming one of the Empire of Japan Japanese workhorses during World War I and World War II.
15th December » Nicaragua becomes a signatory to the Buenos Aires Convention.
23rd December » The Federal Reserve Act is signed into law by President of the United States named President Woodrow Wilson, creating the Federal Reserve System.
24th December » The Italian Hall disaster ("1913 Massacre") in Calumet, Michigan, results in the death of 73 Christmas party goers held by striking mine workers, including 59 children.