9th January » Juan de la Cierva makes the first autogyro flight.
10th January » Lithuania seizes and annexes Klaipėda e.g Memel.
11th January » Occupation of the Ruhr: Troops from France and Belgium occupy the Ruhr area to force Germany to make its World War I reparation payments.
10th February » Texas Tech University is founded as Texas Technological College in Lubbock, Texas
15th February » Greece becomes the last European country to adopt the Gregorian calendar.
16th February » Howard Carter (archaeologist) e.g Howard Carter unseals the burial chamber of Pharaoh Tutankhamun.
3rd March » 'Time (magazine) named TIME' magazine is published for the first time.
5th April » Firestone Tire and Rubber Company begins production of balloon-tires.
6th April » The first Prefects Board in Southeast Asia is formed in Victoria Institution, Malaysia.
15th April » Insulin becomes generally available for use by people with diabetes mellitus named diabetes.
18th April » Yankee Stadium (1923) called Yankee Stadium, "The House that Babe Ruth or Ruth Built", opens.
26th April » George VI or The Duke of York weds Queen Elizabeth The Queen Mother called Lady Elizabeth Bowes-Lyon at Westminster Abbey.
13th May » Robert Bellarmine, a Doctor of the Church named Doctor of the Catholic Church, is beatified.
26th May » 24 Hours of Le Mans, was first held, and has since been run annually in June.
18th June » Checker Taxi puts its first taxicab named taxi on the streets.
25th June » Capt. Lowell H. Smith and Lt. John P. Richter perform the first ever aerial refueling in a Airco DH-4 or DH-4B biplane
1st July » The Canadian Parliament suspends all History of Chinese immigration to Canada e.g Chinese immigration.
13th July » The Hollywood Sign is officially dedicated in the hills above Hollywood, Los Angeles known as Los Angeles, California. It originally reads "Hollywood'land' " but the four last letters are dropped after renovation in 1949.
24th July » The Treaty of Lausanne, settling the boundaries of modern Turkey, is signed in Switzerland by Greece, Bulgaria and other countries that fought in World War I.
2nd August » As vice president, Calvin Coolidge becomes the List of Presidents of the United States or 30th President of the United States after the death of Warren G. Harding
23rd August » Captain (United States O-3) known as Captain Lowell Smith and Lieutenant John P. Richter performed the first mid-air refueling on De Havilland DH-4B, setting an endurance flight record of 37 hours.
1st September » The 1923 Great Kantō earthquake or Great Kantō earthquake devastates Tokyo and Yokohama, killing about 105,000 people.
4th September » Maiden flight of the first U.S. airship, the USS Shenandoah ZR-1 6.
8th September » Honda Point Disaster: Nine United States Navy known as US Navy destroyers run aground off the California coast. Seven are lost, and twenty-three sailors killed.
13th September » Following a military coup in Spain, Miguel Primo de Rivera takes over, setting up a dictatorship.
29th September » The British Mandate for Palestine (legal instrument) known as British Mandate for Palestine takes effect, creating Mandatory Palestine.
6th October » The great powers of World War I withdraw from Istanbul.
13th October » Ankara replaces Istanbul as the capital of Turkey.
16th October » The Walt Disney Company is founded by Walt Disney and his brother, Roy O. Disney or Roy Disney.
29th October » Turkey becomes a republic following the dissolution of the Ottoman Empire.
31st October » The first of 160 consecutive days of 100º Fahrenheit at Marble Bar, Australia.
8th November » Beer Hall Putsch: In Munich, Adolf Hitler leads the Nazism known as Nazis in an unsuccessful attempt to overthrow the German government.
9th November » In Munich, Germany, police and government troops crush the Beer Hall Putsch in Bavaria. The failed coup is the work of the Nazis.
15th November » The German Rentenmark is introduced in Germany to counter hyperinflation in the Weimar Republic.
21st December » United Kingdom and Nepal formally signed an agreement of friendship, called the Nepal–Britain Treaty of 1923, which superseded the Sugauli Treaty signed in 1816.
27th December » Daisuke Namba, a Japanese student, tries to assassinate the Prince Regent Hirohito.
31st December » The chimes of Big Ben are broadcast on radio for the first time by the BBC.