January 27, 1950 (Friday)
- In Washington, DC, the United States signed an individual mutual defense treaties with each of the member nations of the North Atlantic Treaty Organization (NATO). The U.S. made separate agreements with Belgium, Denmark, France, Italy, Luxembourg, the Netherlands, Norway and the United Kingdom, where each nation pledged to come to the defense of the other in the event of a military attack.
- Muroc Field in Kern County, California was renamed in honor of the late test pilot, Glen Edwards (pilot), whose name is now memorialized in Edwards Air Force Base.
- Born: Derek Acorah, English medium and TV personality, as Derek Johnson in Bootle
- Died: Augusto d'Halmar, 67, Chilean author