2nd January » Panamanian president José Antonio Remón Cantera is assassinated.
4th January » The Greece named Greek National Radical Union is formed by Konstantinos Karamanlis.
25th January » The Soviet Union ends the state of war with Germany.
8th February » The Government of Sindh, Pakistan, abolishes the Feudalism in Pakistan called Jagirdari system in the province. One million acres (4000 km2) of land thus acquired is to be distributed among the landless peasants.
13th February » Israel obtains four of the seven Dead Sea scrolls.
18th February » Operation Teapot: Teapot test shot "Wasp" is successfully detonated at the Nevada Test Site with a yield of Effects of nuclear explosions Summary of the effects called 1.2 kilotons. Wasp is the first of fourteen shots in the Teapot series.
23rd February » First meeting of the Southeast Asia Treaty Organization (SEATO).
27th February » Soviet Union regional elections, 1955.
2nd March » Ruler of Cambodia named King Norodom Sihanouk of Cambodia abdicates the throne in favor of his father, King Norodom Suramarit.
1st April » The EOKA rebellion against the British Empire begins in Cyprus, with the goal of obtaining the desired unification ("enosis") with Greece.
7th April » Winston Churchill resigns as Prime Minister of the United Kingdom amid indications of failing health.
11th April » The Air India Kashmir Princess is bombed and crashes in a failed assassination attempt on Zhou Enlai by the Kuomintang.
12th April » The polio vaccine, developed by Dr. Jonas Salk, is declared Jonas Salk Test results announced named safe and effective.
18th April » Twenty-nine nations meet at Bandung, Indonesia, for the first Asian-African Conference.
23rd April » The Canadian Labour Congress is formed by the merger of the Trades and Labour Congress of Canada and the Canadian Congress of Labour.
24th April » The Bandung Conference ends: Twenty-nine non-aligned nations of Asia and Africa finish a meeting that condemns colonialism, racism, and the Cold War.
2nd May » Tennessee Williams wins the Pulitzer Prize for Drama for 'Cat on a Hot Tin Roof'.
12th May » Austria regains its independence as the Allied-occupied Austria named Allied occupation following World War II ends.
14th May » Cold War: Eight Communism e.g Communist bloc countries, including the Soviet Union, sign a mutual defense treaty called the Warsaw Pact.
18th May » Operation Passage to Freedom, the evacuation of 310,000 Vietnamese people or Vietnamese civilians, soldiers and non-Vietnamese members of the French Union known as French Army from communist North Vietnam to South Vietnam following the end of the First In
25th May » In the United States, a night-time Fujita scale e.g F5 tornado strikes the small city of Udall, Kansas, killing 80 and injuring 273. It is the deadliest tornado to ever occur in the state and the 23rd deadliest in the U.S.
25th May » First ascent of Kangchenjunga (8,586 m.), the third-highest mountain in the world, by a British expedition led by Charles Evans (mountaineer) named Charles Evans. Joe Brown (climber) or Joe Brown and George Band reached the summit on May 25, followed by N
2nd June » The Soviet Union called USSR and Socialist Federal Republic of Yugoslavia called Yugoslavia sign the Belgrade declaration and thus normalize relations between both countries, discontinued since 1948.
7th June » Lux Radio Theater signs off-the-air or off the air permanently. The show launched in New York in 1934, and featured radio adaptations of Broadway theatre known as Broadway shows and popular films.
11th June » Eighty-three spectators are killed and at least 100 are injured after an Austin-Healey and a Mercedes-Benz 1955 Le Mans disaster named collide at the 24 Hours of Le Mans, the deadliest ever accident in motorsports.
13th June » Mir Mine, the first diamond mine in the Soviet Union named USSR, is discovered.
14th June » Chile becomes a signatory to the Buenos Aires Convention called Buenos Aires copyright treaty.
16th June » In a futile effort to topple President of Argentina called President Juan Perón, rogue aircraft pilots of the Argentine Navy Bombing of Plaza de Mayo named drop several bombs upon an unarmed crowd demonstrating in favor of Perón in Buenos Aires, killing 3
26th June » The South African Congress Alliance adopts the Freedom Charter at the Congress of the People (1955) e.g Congress of the People in Kliptown.
9th July » The Russell–Einstein Manifesto is released by Bertrand Russell in London called London, England, United Kingdom.
15th July » Eighteen Nobel Prize called Nobel laureates sign the Mainau Declaration against nuclear weapons, later co-signed by thirty-four others.
17th July » Disneyland is dedicated and opened by Walt Disney in Anaheim, California.
27th July » The Allied-occupied Austria e.g Allied occupation of Austria stemming from World War II, ends.
28th July » The Union Mundial pro Interlingua is founded at the first Interlingua congress in Tours called Tours, France.
7th August » Sony named Tokyo Telecommunications Engineering, the precursor to Sony, sells its first transistor radios in Japan.
19th August » In the Northeast United States, severe flooding caused by Hurricane Diane, claims 200 lives.
20th August » In Morocco, a force of Berber people known as Berbers from the Atlas Mountains region of Algeria raid two rural settlements and kill 77 France known as French nationals.
28th August » African American or Black teenager Emmett Till is brutally murdered in Mississippi, galvanizing the nascent American Civil Rights Movement.
16th September » The military coup to unseat President Juan Perón of Argentina is launched at midnight.
16th September » A Soviet Navy Zulu-class submarine becomes the first submarine to launch a ballistic missile.
22nd September » In the United Kingdom, the television channel ITV (TV network) e.g ITV goes live for the first time.
25th September » The Royal Jordanian Air Force is founded.
30th September » Film star James Dean dies in a road accident aged 24.
3rd October » The Mickey Mouse Club debuts on American Broadcasting Company known as ABC.
5th October » Disneyland Hotel (California) known as Disneyland Hotel opens to the public in Anaheim, California.
7th October » American poet Allen Ginsberg performs his poem Howl for the first time at the Six Gallery reading e.g Six Gallery in San Francisco.
26th October » After the last Allies of World War II or Allied troops have left the country and following the provisions of the Austrian Independence Treaty, Austria declares neutral country or permanent neutrality.
26th October » Ngo Dinh Diem or Ngô Đình Diệm declares himself Premier of South Vietnam.
29th October » The ship or Soviet battleship called Novorossiysk strikes a World War II mine in the harbor at Sevastopol.
1st November » The bombing of United Airlines Flight 629 occurs near Longmont, Colorado, killing all 39 passengers and five crew members aboard the Douglas Aircraft named Douglas Douglas DC-6 called DC-6B airliner.
19th November » National Review publishes its first issue.
23rd November » The Cocos Islands are transferred from the control of the United Kingdom to that of Australia.
5th December » The American Federation of Labor and the Congress of Industrial Organizations merge and form the AFL-CIO.
5th December » E.D. Nixon and Rosa Parks lead the Montgomery Bus Boycott.
10th December » 'Mighty Mouse Playhouse' premieres on American television.
14th December » Albania, Austria, Bulgaria, Kingdom of Cambodia (1953–70) Cambodia, Dominion of Ceylon Ceylon, Finland, Hungary, Republic of Ireland Ireland, Italy, Jordan, Laos, Libya, Nepal, Portugal, Romania and Spain join the United Nations.
20th December » Cardiff is proclaimed the capital city of Wales, United Kingdom.
24th December » NORAD Tracks Santa for the first time in what will become an annual Christmas Eve tradition.
31st December » General Motors becomes the first U.S. corporation to make over US$1 billion in a year.