January 3–7 – A series of massacres in Baga, Nigeria and surrounding villages by Boko Haram kills more than 2,000 people
March 5–8 – The ancient city sites of Nimrud, Hatra and Dur-Sharrukin in Iraq are demolished by the Islamic State of Iraq and the Levant.
March 12 – The Islamic State of Iraq and the Levant becomes allies with fellow jihadist group Boko Haram, effectively annexing the group
March 24 – An Airbus A320-211 operated by Germanwings crashes in the French Alps, killing all 150 on board.
April 2 – 148 people are killed, the majority students, in a mass shooting at the Garissa University College in Kenya, perpetrated by the militant terrorist organization Al-Shabaab.
April 25 – A magnitude 7.8 earthquake strikes Nepal and causes 8,857 deaths in Nepal, 130 in India, in China and 4 in Bangladesh with a total of 9,018 deaths.
June 25–26 – ISIL claim responsibility for four attacks around the world during the Ramadan
June 25–26 –Kobanî massacre: ISIL fighters detonate three car bombs, enter Kobanî, Syria, and open fire at civilians, killing more than 220.
June 25–26 –Sousse attacks: 22-year-old Seifeddine Rezgui opens fire at a tourist resort at Port El Kantaoui, Tunisia, killing 40 people.
June 25–26 –Kuwait mosque bombing: A suicide bomber attacks the Shia Mosque Imam Ja'far as-Sadiq at Kuwait City, Kuwait, killing 27 people and injuring 227 others
July 1 – Greek government-debt crisis: Greece becomes the first advanced economy to miss a payment to the International Monetary Fund in the 71-year history of the IMF
July 14 - NASA's New Horizons spacecraft performs a close flyby of Pluto, becoming the first spacecraft in history to visit the distant world.
July 14 - Iran agrees to long-term limits of its nuclear program in exchange for sanctions relief.
September 24 – A stampede during the Hajj pilgrimage in Mecca, Saudi Arabia, kills at least 2,200 people and injures more than 900 others, with more than 650 missing.
October 10 – A suicide bomb kills at least 100 people at a peace rally in Ankara, Turkey, and injures more than 400 others.
October 31 – Flight KGL9268, an Airbus A321 airliner en route to Saint Petersburg from Sharm el-Sheikh, crashes near Al-Hasana in Sinai, killing all 217 passengers and 7 crew members on board
November 12 – Several suicide bombings occur in Beirut, Lebanon, killing 43 and injuring 239. The Islamic State in Iraq and the Levant claim responsibility.
November 13 – Multiple attacks claimed by Islamic State of Iraq and the Levant (ISIL) in Paris, France, resulting in 130 fatalities.
November 24 – Syrian Civil War: Turkey shoots down a Russian fighter jet in the first case of a NATO member destroying a Russian aircraft since the 1950s.