Editing 1957 (section)

===April===
* [[April]] – [[IBM]] sells the first compiler for the [[Fortran]] scientific [[programming language]].
* [[April 1]] – The first new [[conscript]]s join the {{Lang|de|[[Bundeswehr]]}}.
* [[April 5]] – The [[Communist Party of India]] wins the elections in [[Kerala]], making [[E. M. S. Namboodiripad]] its first chief minister.
* [[April 9]] – [[Egypt]] reopens the [[Suez Canal]] to all shipping.
* [[April 12]] – The United Kingdom announces that [[Singapore]] will gain self-rule on January 1, 1958.
* [[April 13]] – The [[1957 alleged Jordanian military coup attempt]] against [[Hussein Bin Talal]] is made by [[Ali Abu Nuwar]]. 
* [[April 15]]
** The [[Distant Early Warning Line]] is handed over by contractors to the U.S. and Canadian military.
** [[White Rock, British Columbia|White Rock]] secedes from [[Surrey, British Columbia]], following a referendum.
* [[April 17]] – Suspected English [[serial killer]] Dr [[John Bodkin Adams]] is found not guilty of murder, at the [[Old Bailey]].
* [[April 24]]–[[April 25|25]] – The [[1957 Fethiye earthquakes]] occur on the Mediterranean coast of [[Turkey]].
* [[April 30]] – The [[solar eclipse of April 30, 1957]], a non-central annular solar eclipse that does not have a northern path limit, takes place. This is the last of 57 umbral solar eclipses of [[Solar Saros 118]].