1955

align="center" colspan=2 | Years:
1952 1953 1954 - 1955 - 1956 1957 1958

align="center" colspan=2 | Decades:
1920s 1930s 1940s - 1950s - 1960s 1970s 1980s

align="center" | Centuries:
19th century - 20th century - 21st century

1955 is a common year starting on Saturday.

Events

King Norodom Sihanouk of Cambodia abdicates the throne in favor of his father, King Norodom Suramarit.
Severe flooding in North and Western Australia – 200 humans and tens of thousands of sheep dead, 44.000 homeless

March 15- Fedral ALP (Australian Labor Party) split (a)
April 5 - Winston Churchill resigns as Prime Minister of the United Kingdom amid indications of failing health
April 7 - Anthony Eden becomes Prime Minister of the United Kingdom

May 5 - Cold War: West Germany becomes a sovereign nation
May 9 - Cold War: West Germany joins NATO.
May 14 - Cold War: Eight communist bloc countries including the Soviet Union sign a mutual-defense treaty called the Warsaw Pact.
May 15 - First ascent of Makalu, fifth highest mountain.
May 20 – Peace talks with Mau Mau in Kenya fail again
May 25 - First ascent of Kanchenjunga, 3rd highest mountain.
Assassination of Florida judge Curtis Chillingworth
June 11 - On the Le Mans racetrack, three cars crash into spectator's grandstand - 70 dead, more than 100 injured
June 20 - Very long (7min 08sec) total solar eclipse visible in Southeast Asia. During the entire Second Millennium, only seven total solar eclipses exceeded seven minutes of totality. This was the next to last.
July 17 - Disneyland opens in Anaheim, California.
July 27 - The Allied occupation of Austria stemming from World War II, ends (started on May 9, 1945).

August 19 - In the Northeast United States, severe flooding caused by Hurricane Diane claims 200 lives.
August 20 - Eight World Scout Jamboree opens in Niagara-on-the-Lake, Ontario, Canada.
August 20 - In Morocco, a force of Berbers from the Atlas Mountains region of Algeria raid two rural settlements and kill 77 French nationals.
August 27 - The first edition of the Guinness Book of Records
August 28 - Emmett Till, a black teenager from Chicago, is murdered in Money, Mississippi, by white men angered because he whistled at a white woman while buying groceries.
September 11 - Dedication of the first Temple of The Church of Jesus Christ of Latter-day Saints in Europe, the Bern Switzerland Temple.
September 14 - Konrad Adenauer travels to Moscow to establish diplomatic relations and to negotiate for the release of the remaining German prisoners of war in the Soviet Union
September 16 - A military coup in Argentina deposes Juan Peron.
September 30 - James Dean is killed in an automobile accident near Pasa Robles, California
October 2 - The ENIAC computer is deactivated.
October 7 - The last German prisoners of war are released from the Soviet Union
October 23 - The Saarland is once again part of West Germany, following a referendum
October 26 - Austrian independence is declared again forming the Second Republic with the declaration of everlasting neutrality and the state constitution.
October 29 - The Soviet battleship Novorossiisk strikes a World War II mine in the harbor at Sevastopol.

November 1 - The first international solar energy conference is held in Tucson, Arizona
November 1 - DC-6B explodes in mid air after takeoff in Denver, Colorado - 44 dead (later proves to be a time bomb placed by John Gilbert Graham)
November 2 – Entry into catacombs of Paris becomes illegal and punishable by a fine
November 20 - Train crash near Didcot, Oxfordshire - 10 dead, 99 injured
November 22 - Soviet Union nuclear test in Siberia.
November 23 - The Cocos Islands are transferred from United Kingdom to Australian control.
November 24 - Fokker F27 first flight.
December 1 - American Civil Rights Movement: In Montgomery, Alabama, seamstress Rosa Parks refuses to give her bus seat to a white man and is arrested for violating the city's racial segregation laws (Baptist minister Martin Luther King, Jr. later led the successful Montgomery Bus Boycott as a result).
December 7 - Clement Attlee resigns as leader of the Labour Party - his successor is Hugh Gaitskell.
10 - Menzies Govt Re-elected for 4th Term (a)
December 19 - Sudanese Parliament declares independence.
December 31 - General Motors becomes the first American corporation to make sales of over one billion dollars in a year.

Dick Bruna draws Miffy for the first time.
Winston Churchill resigns as Prime Minister of Britain for the second time.
Mattachine Society, one of the first gay rights organizations, is founded in the City of New York.
Maurice Wilkes publishes a description of microprogramming in IEEE Spectrum.

April 1 - The DuMont Network drastically cuts back its programming.
September 28 - The First World Series game broadcast in color.
The Honeymooners premieres, starring Jackie Gleason, Art Carney and Audrey Meadows.
Lawrence Welk Show debuts, and will run until 1982.
The Mickey Mouse Club debuts, featuring "Mouseketeer" Annette Funicello, and will run until 1959.