1945 1946 1947 - 1948 - 1949 1950 1951
1910s 1920s 1930s - 1940s - 1950s 1960s 1970s
Events of 1948
- January 1
- January 4 - Burma gains its independence from the United Kingdom.
- January 5 - Warner Brothers shows the first color newsreel (Tournament of Roses Parade and the Rose Bowl).
- January 17 - Truce between nationalist Indonesian and Dutch troops in Java.
- January 22 - British foreign secretary Bevin proposes the formation of a Western Union between Britain, France and the Benelux countries to stand up against the Soviet Union. The Treaty of Brussels is signed March 17 as a consequence, a predecessor to NATO.
- January 26 - Teigin poison case: a man masquerading as a doctor poisons 12 of 16 bank employees of the Tokyo branch of Imperial Bank and takes the money; artist Sadamichi Hirasawa is later sentenced to death for the crime, but is never executed.
- January 30
- February 1 - Soviet Union begins to jam Voice of America broadcasts.
- February 4 - Ceylon (later renamed Sri Lanka) becomes independent within the British Commonwealth. King George VI becomes King of Ceylon.
- February 18 - Eamon de Valera, head of government since 1932, loses power to an opposition coalition. John A. Costello is appointed Taoiseach of Éire (formerly called the Irish Free State) by President O'Kelly.
- February 25 - The Communist Party seizes control of Czechoslovakia. This day was celebrated by the regime as the "Victorious February" (Czech:"Vítězný únor"; Slovak:"Víťazný Február") until November 1989.
- March 8 - The United States Supreme Court rules that religious instruction in public schools did not violate the U.S. Constitution.
- March 10 - Czech foreign minister Jan Masaryk killed in fall from a window of his apartment in Prague. Later communist government rules it "suicide".
- March 16 - Largest flood in the history of Brampton, Ontario. 
- March 17 - Hells Angels founded in California.
- March 20 - First elections in Singapore.
- April 3 - President Harry Truman signs the Marshall Plan which authorizes $5 billion in aid for 16 countries.
- April 7
- April 9
- April 24 - End of the Costa Rican Civil War
- May 1 - 213 communists executed in Greece.
- May 11 - Luigi Einaudi becomes President of the Italian Republic.
- May 14
- May 15 - 1948 Arab-Israeli War: Mandate of Palestine is officially terminated by Britain; Egypt, Transjordan, Lebanon, Syria, Iraq and Saudi Arabia enter Palestine and attack the nascent State of Israel .
- May 16 - Chaim Weizmann is elected as the first President of Israel.
- May 18 - The First Legislative Yuan of the Republic of China officially convenes in Nanking.
- May 26 - The U.S. Congress passes Public Law 557 which permanently establishes the Civil Air Patrol as the auxiliary of the United States Air Force.
- May 30 - A dike along the Columbia River breaks, obiterating Vanport, Oregon within minutes: 15 people die and tens of thousands are left homeless.
- June 3 - Palomar Observatory telescope finished in California.
- June 16
- June 17 - A Douglas DC-6 carrying United Air Lines Flight 624 crashes near Mount Carmel, Pennsylvania, killing all 43 people on board.
- June 18
- June 20 - U.S. Congress: Commencement of Congressional Recess for the remainder of 1948 after an overtime session closed on this Saturday at 0700 D.C. time (to be shortly interrupted by Truman's recall from Congressional recess for July 20, 1948).
- June 21 - The Deutsche Mark becomes official currency of the future Federal Republic of Germany.
- June 22- The ship Empire Windrush brings the first group of several hundred black immigrants to Tilbury near London from the Caribbean countries. This would be the start of multiculturalism in Britain.
- June 24
- June 26 - William Shockley files the original patent for the grown junction transistor, the first bipolar junction transistor.
- June 28
- Cominform Resolution marks the beginning of the Informbiro period in Yugoslavia and Soviet/Yugoslav split.
- David Lean's Oliver Twist, based on Charles Dickens's famous novel, premieres in the UK. It will be banned for 3 years in the U.S. because of alleged anti-Semitism in depicting master criminal Fagin, played by Alec Guinness.
- Earthquake hits Fukui, Japan killing 3,895.
- July 5 - British National Health Service Act enacted.
- July 6 - the world's first Air Car-ferry service was flown by a Bristol Freighter of Silver City Airways from Lympne to Le Touquet.
- July 13 - The Coptic and Ethiopian Churches reach an agreement leading to the promotion of the Ethiopian church to the rank of an autocephalous Patriarchate. Five bishops are immediately consecrated by the Patriarch of Alexandria, and the successor to Abuna Qerellos IV is granted the power to consecrate new bishops, who are empowered to elect a new Patriarch for their church.
- July 15
- July 20 - Cold War: President Harry S. Truman issues the second peacetime military draft in the United States amid increasing tensions with the Soviet Union (the first peacetime draft occurred in 1940 under President Roosevelt).
- July 24 - Great oil fire in the harbor of Naantali, Finland
- July 26 - U.S. President Harry S. Truman signs Executive Order 9981, ending racial segregation in the United States Armed Forces.
- July 28 - Around 200 die in explosion at a chemical plant in Ludwigshafen, Germany.
- July 29 - 1948 Summer Olympics begin in London, the first Summer Olympics since World War II.
- July 31 - At Idlewild Field in New York, New York International Airport (later renamed John F. Kennedy International Airport) is dedicated.
- August 1 - The U.S. Air Force Office of Special Investigations is founded.
- August 5 - Earl Shaffer becomes the first person to hike the Appalachian National Scenic Trail from end to end without interruption.
- August 10 - August 23 - Herrenchiemsee Convent prepares the draft for the Basic Law for the Federal Republic of Germany.
- August 15 - Establishment of the Republic of Korea (South Korea).
- August 19 - Soviet troops fire at German demonstrators that protest against the Berlin Blockade.reference required
- August 23 - World Council of Churches established.
- September 4 - Queen Wilhelmina of the Netherlands abdicates for health reasons.
- September 5 - Robert Schuman becomes Prime Minister of France.
- September 6 - Juliana becomes Queen of the Netherlands.
- September 11 - Death of Quaid-e-Azam Muhammad Ali Jinnah, Founder and first Governor General of Pakistan (b. 1876). Pakistan is in a state of shock as it mourns the departure of the father of the nation. The day is a public holiday nation-wide.
- September 12 - Invasion of the State of Hyderabad by the Indian Army on the day after the Pakistani leader Jinnah's death to assist damage control. Operation Polo led to the deaths of an estimated tens of thousands of Hyderabadi Muslims.
- September 17 - Stern Gang assassinates count Folke Bernadotte.
- November 2 - United States presidential election, 1948: Harry S. Truman defeats Thomas E. Dewey and Strom Thurmond for the US presidency.
- November 12 - In Tokyo, an international war crimes tribunal sentences seven Japanese military and government officials to death, including General Hideki Tojo, for their roles in World War II.
- November 15 - Louis Stephen St. Laurent becomes Canada's twelfth prime minister.
- November 16 - Operation Magic Carpet to transport Jews from Yemen to Israel begins.
- November 17 - Mohammad Reza Shah Pahlavi divorces his second wife, the former Princess Fawzia of Egypt.
- November 20 - Geoffrey B. Orbell rediscovers the Takahē, last seen 50 years ago, near Lake Te Anau, New Zealand.
- November 24 - In Venezuela, president Rómulo Betancourt is ousted by a military coup. A military junta takes over the government.
- November 27 - The Calgary Stampeders defeat the Ottawa Rough Riders 12-7 before 20,013 fans at Toronto's Varsity Stadium to capture their first Grey Cup and complete the only perfect season to date in Canadian Football.
- December 10 - United Nations General Assembly adopts Universal Declaration of Human Rights.
- December 26 - Last Soviet troops withdraw from North Korea.
- December 28 - Member of Muslim Brotherhood assassinates Egyptian Prime Minister Mahmud Fahmi Nokrashi.
- December 31 - 1948 Arab-Israeli War: Israeli troops drive Egyptians from Negev.
- March 27 - Henry Hamilton Beamish, British nationalist and founder of The Britons (b. 1873)
- May 28 - Unity Mitford, British National Socialist and Hitler's girlfriend (b. 1914)
- June 2 - Karl Brandt, German physician (b. 1904)
- December 27 - Joel L. Baskin, attorney and Grand Dragon of the Ku Klux Klan (b. 1885)