January 
January 1 – Latvia officially adopts the euro as its currency and becomes the 18th member of the Eurozone. 
January 5 – A launch of the communication satellite GSAT-14 aboard the GSLV Mk.II D5 marks the first successful flight of an Indian cryogenic rocket engine.   

February 
February – The West African Ebola virus epidemic begins, infecting at least 28,616 people and killing at least 11,310 people, the most severe both in terms of numbers of infections and casualties. 
February 7–23 – The XXII Olympic Winter Games are held in Sochi, Russia. Slopestyle events are introduced for the first time. 
February 13 – Belgium becomes the first country in the world to legalise euthanasia for terminally ill patients of any age. 
February 22 – 2014 Ukrainian revolution: The Verkhovna Rada (Ukrainian parliament) votes to remove President Viktor Yanukovych from office, replacing him with Oleksandr Turchynov, after days of civil unrest leaving around 100 people dead in Kyiv.   
March 
March 5 – Nicolás Maduro, the President of Venezuela, severs diplomatic and political ties with Panama, accusing Panama of being involved in a conspiracy against the Venezuelan government. 
March 8 – Malaysia Airlines Flight 370, a Boeing 777 airliner en route to Beijing from Kuala Lumpur, disappears over the Gulf of Thailand with 239 people on board. The aircraft is presumed to have crashed into the Indian Ocean. 
March 16 
- 2014 Crimean status referendum: A referendum on the status of the Crimean Peninsula is held. 
- The fifth ICC T20 World Cup in cricket is held in Bangladesh. 
March 27 – The United Nations General Assembly passes Resolution 68/262, recognizing Crimea within Ukraine's international borders and rejecting the validity of the 2014 Crimean referendum. 
March 31 – The United Nations International Court of Justice rules that Japan's Antarctic whaling program is not scientific but commercial and forbids grants of further permits. 

April 
April 7 – The Donetsk People's Republic unilaterally declares its independence from Ukraine. 
April 14 – Chibok schoolgirls kidnapping: an estimated 276 girls and women are abducted from a school in Nigeria and held hostage. April 16 – Korean ferry MV Sewol capsizes and sinks after an unmanageable cargo shift, killing 304 people, mostly high school students. April 25 — The water source for Flint, Michigan is changed, starting the Flint water crisis. 
April 27 – The Catholic Church simultaneously canonizes Popes John XXIII and John Paul II.

Source: Wikipedia, 2014