1927

• The Hardy Boys mystery series for children is launched.
• January 1 – Cristero War erupts in Mexico when pro-Church rebels attack secular-minded government
• January 7 – First transatlantic telephone call – New York City to London
• January 9 – Military rebellion crushed in Lisbon
• January 14 – Paul Doumer elected president of France
• January 19 – Britain sends troops to China
• January 30 – Right-wing veterans and the Republican Schutzbund clash in Schattendorf, Burgenland, Austria. One man and a child are killed by gunshots. See July 15.
• February 12 – First British troops land in Shanghai
• February 14 – Earthquake in Yugoslavia – 700 dead
• February 19 – General strike in Shanghai in protest of the presence of the British troops
• February 23 – The Federal Radio Commission (later renamed the Federal Communications Commission) begins to regulate the use of radio frequencies.
• March 4 – A diamond rush in South Africa includes trained athletes that have been hired by major companies to stake claims
• March 6 – In Britain, a 1000 people a week die from influenza epidemic
• March 10 – Albania mobilizes in case of an attack of Yugoslavia
• March 11 – In New York City, the Roxy Theatre is opened by Samuel Roxy Rothafel.
• March 11 – First armoured car robbery, committed by the Flatheads gang.

• Julius Wagner-Jauregg, Austrian doctor, won the 1927 Nobel Prize in Physiology or Medicine, (b. 1857) (d. 1940)

• January 3 – Mario Lanfranchi, Italian movie directors (d. 2022)
• January 30 – Olof Palme, Prime Minister of Sweden (d. 1986)

• February 7 – Juliette Gréco, French singer and actress (d. 2020)
• February 20 – Sidney Poitier, Bahamian-American actor (d. 2022)
• February 21 – Hubert de Givenchy, French fashion designer (d. 2018)

• March 6 – Gabriel García Márquez, Colombian writer, journalist and Nobel Prize in Literature (d. 2014)
• March 17 - Patrick Allen, English actor (d. 2006)
• March 31 – Cesar Chavez, American labor union leader (d. 1993)

• April 1 – Ferenc Puskas, Hungarian footballer (d. 2006)
• April 6 – Gerry Mulligan, American musician (d. 1996)
• April 10 – Marshall Warren Nirenberg, American biochemist, won the 1968 Nobel Prize in Physiology or Medicine, (d. 2010)
• April 16 – Pope Benedict XVI (d. 2022)
• April 18 – Tadeusz Mazowiecki, 1st Prime Minister of Poland (d. 2013)

June 6- Shefqet Nebih Gashi, Serbian politician

• June 10 – László Kubala, Hungarian footballer (d. 2002)
• June 15 – Hugo Pratt, Italian author and illustrator (d. 1995)

• July 4 – Gina Lollobrigida, Italian actress
• July 4 – Neil Simon, American playwright, writer, academic (d. 2018)
• July 6 – Janet Leigh, American actress (d. 2004)
• July 13 – Simone Veil, 12th President of the European Parliament (d. 2017)

• August 18 – Rosalynn Carter, First Lady of the United States
• August 21 – Thomas S. Monson, American religious leader, President of the Church of Jesus Christ of Latter-day Saints (d. 2018)

• September 16 – Peter Falk, American actor, (d. 2011)

• October 14 – Roger Moore, English actor (d. 2017)
• October 16 – Günter Grass, German novelist, poet, playwright, illustrator, graphic artist, and sculptor (d. 2015)
• October 18 - George C. Scott, American actor (d. 1999)

• November 3 – Odvar Nordli, Prime Minister of Norway (d. 2018)
• November 7 – Hiroshi Yamauchi, Japanese businessman, 3rd president of Nintendo (d. 2013)
• November 8 - Patti Page, American singer (d. 2013)
• November 8 – Ken Dodd, English comedian (d. 2018)
• November 8 – Nguyen Khanh, South Vietnamese Prime Minister (d. 2013)
• November 23 – Angelo Sodano, Italian Cardinal of the Roman Catholic Church (d. 2022)

• December 3 – Andy Williams, American singer (d. 2012)
• December 5 – Bhumibol Adulyadej, King of Thailand (d. 2016)
• December 10 - Harvey Glatman, American serial killer (d. 1959)
• December 12 – Robert Noyce, American inventor (d. 1990)
• December 25 – Ram Narayan, Indian musician