Millennium:	2nd millennium
Centuries:	19th century – 20th century – 21st century
Decades:	1880s  1890s  1900s  – 1910s –  1920s  1930s  1940s
Years:	1909 1910 1911 – 1912 – 1913 1914 1915

1912 in other calendars

Gregorian calendar	1912 MCMXII
Ab urbe condita	2665
Armenian calendar	1361 ԹՎ ՌՅԿԱ
Assyrian calendar	6662
Bahá'í calendar	68–69
Balinese saka calendar	1833–1834
Bengali calendar	1319
Berber calendar	2862
British Regnal year	2 Geo. 5 – 3 Geo. 5
Buddhist calendar	2456
Burmese calendar	1274
Byzantine calendar	7420–7421
Chinese calendar	辛亥年 (Metal Pig) 4608 or 4548     — to — 壬子年 (Water Rat) 4609 or 4549
Coptic calendar	1628–1629
Discordian calendar	3078
Ethiopian calendar	1904–1905
Hebrew calendar	5672–5673
Hindu calendars
- Vikram Samvat	1968–1969
- Shaka Samvat	1833–1834
- Kali Yuga	5012–5013
Holocene calendar	11912
Igbo calendar	912–913
Iranian calendar	1290–1291
Islamic calendar	1330–1331
Japanese calendar	Meiji 45 / Taishō 1 (大正元年)
Javanese calendar	1841–1842
Juche calendar	1
Julian calendar	Gregorian minus 13 days
Korean calendar	4245
Minguo calendar	ROC 1 民國1年
Nanakshahi calendar	444
Thai solar calendar	2454–2455
Tibetan calendar	阴金猪年 (female Iron-Pig) 2038 or 1657 or 885     — to — 阳水鼠年 (male Water-Rat) 2039 or 1658 or 886

1912 (MCMXII) was a leap year starting on Monday in the Gregorian calendar and a leap year starting on Sunday in the Julian calendar.

• January 1 – Establishment of Republic of China.
• January 5 – Prague Party Conference
• January 6 – New Mexico is admitted as the 47th U.S. state.
• January 17 – British polar explorer Robert Falcon Scott and a team of four begin the second expedition to reach the South Pole.
• January 23 – The International Opium Convention is signed at The Hague.
• February 8 – Mexican Revolution – Military rebellion against the rule of Francisco Madero begins in Mexico City. Battles last for 10 days
• February 12 – Republic of China adopts the Gregorian calendar
• February 14 – Arizona is admitted as the 48th U.S. state.
• February 14 – In Groton, Connecticut, the first diesel-powered submarine is commissioned.
• February 18 – Francisco Madero is forced to resign – battle ends. All members of Madero's government are arrested.
• February 19 – Prizes are included in Cracker Jack candy boxes for the first time
• February 22 – Francisco Madero and Pino Suarez are shot, allegedly when they "tried to escape"
• March 1 – Albert Berry makes the first parachute jump from a moving airplane.
• March 1 – Georg Ritter von Trapp, head of the famous Austrian singing family memorialized in the musical The Sound of Music marries Agathe
• March 5 – Italian forces are the first to use airships for a military purpose by using them for reconnaissance west of Tripoli behind Turkish lines.
• March 7 – Roald Amundsen announces discovery of the South Pole
• March 7 – French aviator Henri Seimet makes the first non-stop flight from Paris to London in three hours
• March 12 – The Girl Guides (later renamed the Girl Scouts) are founded.
• March 16 – Lawrence Oates, ill member of Scott's South Pole expedition leaves the tent saying, "I am just going outside and may be some time"
• March 27 – Mayor Yukio Ozaki of Tokyo gives 3,000 cherry blossom trees to be planted in Washington, D.C. to symbolize the friendship between the two countries.
• March 30 – France establishes a protectorate over Morocco.
• April 14–15 – The R.M.S Titanic sank after hitting an iceberg in the middle of the Atlantic Ocean. Over 1500 people died.
• April 20 – Fenway Park opens in Boston, Massachusetts. The Red Sox defeat the New York Highlanders 7-6 in 11 innings in the first game. It is the oldest active ballpark.
• Alexis Carrel, French surgeon, won the 1912 Nobel Prize in Physiology or Medicine

• January 8 – José Ferrer, Puerto Rican actor and theatre and film director (d. 1992)
• January 28 – Jackson Pollack, American artist (d. 1956)

• February 19 – Anton Buttigieg, 2nd President of Malta (d. 1983)

• March 5 – Jack Marshall, Prime Minister of New Zealand (d. 1988)
• March 12 – Pat Nixon, 39th First Lady of the United States (d. 1993)
• March 22 – Karl Malden, American actor (d. 2009)
• March 27 — James Callaghan, Prime Minister of the United Kingdom (d. 2005)

• April 8 – Sonja Henie, Norwegian figure skater (d. 1969)
• April 15 – Kim Il-sung, Supreme Leader of North Korea (d. 1994)

• May 9 – Pedro Armendáriz, Mexican actor (d. 1963)

• June 23 – Alan Turing, English mathematician (d. 1954)

• August 13 – Salvador Luria, Italian American microbiologist (d. 1991)
• August 23 – Gene Kelly, American dancer, actor, singer, director, producer and choreographer (d. 1996)
• August 25 – Erich Honecker, East German leader (d. 1994)

• September 5 – John Cage, American composer (d. 1992)
• September 21 – Chuck Jones, American animator, cartoon artist, screenwriter, producer, and director of animated films (d. 2002)

• October 7 – Fernando Belaúnde Terry, 49th and 52nd President of Peru (d. 2002)
• October 17 – Pope John Paul I (d. 1978)

• December 2 – Boun Oum, 4th Prime Minister of Laos (d. 1980)
• December 22 – Lady Bird Johnson, 38th First Lady of the United States (d. 2007)

• February 12 – Gerhard Armauer Hansen, Norwegian doctor and scientist (b. 1841)
• May 30 – Wilbur Wright of the Wright brothers, American co-inventor of the airplane.
• April 15 – Over 1500 people die on the R.M.S Titanic
• December 11 - James Otis, American children's writer

• May 29 - Premiere of Nijinsky's ballet The Afternoon of a Faun in Paris