2007

+ Bulgaria and Romania join the European Union, while Slovenia joins the Eurozone.
	+ Adam Air Flight 574 disappears from Jakarta's radar. A week later it is founded that the aircraft had crashed into the Makassar Strait, killing all 102 people on board.
* January 4 – Congress elects Nancy Pelosi as the first female Speaker of the House in U.S. history.
* January 8 – Russian oil supplies to Poland, Germany, and Ukraine are cut as the Russia–Belarus energy dispute escalates; they are restored three days later.
* January 9 – Apple CEO Steve Jobs introduces the original iPhone at a Macworld keynote in San Francisco.

### February

* February 2 – The IPCC publishes its fourth assessment report, having concluded that global climate change is "very likely" to have a predominantly human cause.
* February 3 – A truck bomb explodes in Baghdad, Iraq, killing at least 135 people and injures 339 others.
* February 13 – North Korea agrees to shut down its nuclear facilities in Yongbyon by April 14 as a first step towards complete denuclearization, receiving in return energy aid equivalent to 50,000 tons of heavy fuel oil.
* February 26 – The International Court of Justice finds Serbia guilty of failing to prevent genocide in the Srebrenica massacre, but clears it of direct responsibility and complicity in the case.

### March

* March 1 – The fourth International Polar Year, a $1.73 billion research program to study both the North Pole and South Pole, is launched in Paris.
* March 11 – According to the accusation by Georgia, three Russian helicopters fired on the Georgian-controlled Kodori Gorge in a break-away autonomous republic of Abkhazia in north-western Georgia.
* March 13 – April 28 – The 2007 Cricket World Cup is held in the West Indies and is won by Australia.
* March 23 – Naval forces of Islamic Revolutionary Guard Corps arrest Royal Navy personnel in disputed Iran-Iraq waters; they were released on April 4.
* March 27 – Latvian Prime Minister Aigars Kalvitis and Russian Prime Minister Mikhail Fradkov sign a border treaty between Latvia and Russia, officially demarcating the border between the two.

### April

* April 3 – French high speed passenger train, the TGV, reaches a top speed of 574.8 km/h (357.2 mph), breaking the record for the world's fastest conventional train.
* April 16 – Seung-Hui Cho kills 32 people and wounds 17 others in a shooting at Virginia Tech, a university in the United States.
* April 18 – A series of attacks take place across Baghdad, Iraq, killing nearly 200 people.
* April 24 – Gliese 581c, a potentially Earth-like extrasolar planet habitable for life, is discovered in the constellation Libra.
* April 26–27 – Ethnic Russian riot in Tallinn and other cities in Estonia against the moving of the Bronze Soldier, a Soviet World War II memorial.

### May

* May 3 – Madeleine McCann disappeared from 5A Rua Dr Agostinho da Silva in Praia da Luz, Portugal while she was sleeping.
* May 17 – The Russian Orthodox Church Abroad and the Moscow Patriarchate re-unite after 80 years of schism.
* May 20 – Sheikh Mohammed bin Rashid Al Maktoum of Dubai makes the largest single charitable donation in modern history, committing €7.41 billion to an educational foundation in the Middle East.

### June

* June 5 – NASA's MESSENGER spacecraft makes its second fly-by of Venus en route to Mercury.
* June 28 – 2007 European heat wave: in the aftermath of Greece's worst heat wave in a century, at least 11 people are reported dead from heatstroke, approximately 200 wildfires break out nationwide, and the country's electricity grid nearly collapses due to record breaking demand.
* June 29 – The iPhone, the first modern smartphone, is released in the United States. It was later released in the United Kingdom, France, Germany, Portugal, the Republic of Ireland and Austria in November 2007.

### July

* July 7 – Live Earth Concerts are held in nine major cities around the world to raise environmental awareness.
* July 17 – TAM Airlines Flight 3054 overruns the runway of São Paulo–Congonhas Airport and crashes, killing all 187 and 12 others on the ground.
* July 24 – Five Bulgarian nurses were released from Libyan prison after eight and a half years spent behind bars in Benghazi and Tripoli, marking the end of the so-called "HIV trial in Libya".

### August

* August 4 – The *Phoenix* spacecraft is launched toward Mars to study its north pole.
* August 9 – The French global bank BNP Paribas in the United Kingdom blocks withdrawals from three hedge funds heavily committed in sub-prime mortgages, signaling the financial crisis of 2007–2008.
* August 14 – Multiple suicide bombings kill 572 people in Qahtaniya, northern Iraq.
* August 15 – An 8.0 earthquake strikes Peru, killing at least 519 people, injuring more than 1,300, and causing tsunami warnings in the Pacific Ocean.

### September

* September 6 – Israeli Air Force airplanes attack a suspected nuclear reactor in Syria in an airstrike.
* September 13 – The United Nations General Assembly adopts the Declaration on the Rights of Indigenous Peoples.
* September 14 – The SELENE spacecraft launches, with its objective being to study the Moon.
* September 20 – The Universal Forum of Cultures opens in Monterrey, Mexico.
* September 25 – Mount Ruapehu in Tongariro National Park in New Zealand, erupts.

### November

* November 6 – A suicide bomber kills at least fifty people in Mazar-i-Sharif, Afghanistan, including six members of the National Assembly.
* November 14 – High Speed 1 from London to the Channel Tunnel is opened to passengers.
* November 16 – Up to 15,000 people are believed to have been killed after Cyclone Sidr hits Bangladesh.

### December

* December 5 – Eight people are killed and four others wounded when a gunman opens fire at Westroads Mall in Omaha, Nebraska.
* December 13 – Treaty of Lisbon is signed by members states of European Union.
* December 20 – The Pablo Picasso painting *Portrait of Suzanne Bloch*, together with Candido Portinari's *O Lavrador de Café*, is stolen from the São Paulo Museum of Art.
* December 21
	+ At the age of &000000257724720000000081 years, 244 days, Queen Elizabeth II became the oldest ever reigning British monarch, surpassing Queen Victoria who was aged &000000257716080000000081 years, 243 days upon her death on January 22, 1901.
	+ The Czech Republic, Estonia, Hungary, Latvia, Lithuania, Malta, Poland, Slovakia, and Slovenia join the Schengen border-free zone.
* December 27
	+ Former Pakistani prime minister Benazir Bhutto is assassinated, along with 20 other people, at an election rally in Rawalpindi.
	+ Riots erupt in Mombasa, Kenya, after Mwai Kibaki is declared the winner of the general election, triggering a political, economic, and humanitarian crisis that killed over 1,000 people.