2004

January

 * – crashes into the  off the coast of, killing all 148 aboard making it one of the deadliest aviation accidents in Egyptian history at the time.
 * – The, the largest ocean liner ever built, is christened by its namesake's granddaughter,.

February

 * - creates the social networking site.
 * – president  is killed in a plane crash near.
 * – an president is.

March

 * – occur in, killing over 140  commemorating the.
 * – at a  train station in, kill at least 192 people.
 * –, the first ever recorded South Atlantic , makes landfall in ,.
 * –, , , , , and  are admitted to , the largest expansion of the organization.

April

 * – The is signed by the ese government and two rebel groups, in order to put a pause on the.
 * – i helicopters fire missiles at a convoy of vehicles in the, killing leader.
 * – on the, which proposes to reunite the island, take place in both the -controlled and the -controlled parts. Although the  vote in favour, the  reject the proposal.

May

 * – The by 10 member states:, , , , the , , , ,  and.

June

 * – –  hosts the  football tournament, which is won by.
 * – In, becomes the first privately funded  to achieve.
 * – The U.S.-led coalition occupying Iraq, the (CPA), transfers sovereignty to the.
 * – Preliminary hearings begin in in the trial of president, for s and crimes against humanity.

July

 * The unmanned spacecraft arrives at.
 * The stops recognizing  passports as legal identification.
 * The stops recognizing  passports as legal identification.

August

 * – A fire in the in Asunción, Paraguay kills around 400 peoples.
 * – 's unmanned  spacecraft is launched, with its primary mission being the study of.
 * – – The are held in.
 * – Armed robbers steal 's ', ', and other paintings from the in.
 * – After departing in, , a , explodes over 's  and crashes, killing all 43 people on board; minutes later, , a  departing the same airport, explodes over  and crashes, killing all 46 on board. The  declares the explosions to have been caused by female  s.

September

 * – rebels, mostly children, at a school in . The crisis ends when Russian security forces storm the building, resulting in more than 330 people being killed.

October

 * – Suicide bombers at the  resort of, killing 34 people and injuring 171, mostly Israeli tourists.
 * – : 's /  is re-elected with an increased majority, defeating the  led by.
 * – A team of explorers reach the bottom of, the world's deepest cave, with a depth of 2,080 meters (6,824 feet).
 * – is sworn in as the 6th, becoming the first directly elected president in Indonesia.
 * – European heads of state sign in Rome the Treaty and Final Act, establishing the first.

November

 * – is reelected
 * – The unmanned probe  arrives at the, becoming the first European satellite to fly to the Moon and orbit it.
 * – 's  breaks a record by reaching a velocity of about 7,000 mph ( 9.6) in an unmanned experimental flight.
 * – The begins following a  in  where  won against  amid accusations of electoral fraud. A revote results in Yushchenko being declared the winner.

December

 * – The world's tallest bridge, the over the  in the  mountains, France, is officially opened.
 * – Iraqi insurgents in the city of, killing 22 people.
 * – The 9.1–9.3  shakes northern  with a maximum  of IX (Violent). One of the largest observed s follows, affecting coastal areas of, , , the , , , , and , killing over 200,000 people.
 * – Astrophysicists from the in Garching near Munich measure the strongest burst from a . At 21:30:26 UT Earth is hit by a huge wave front of gamma and X-rays. It is the strongest flux of high-energetic gamma radiation measured so far.
 * – A in Buenos Aires, Argentina kills 194.
 * –, at the time the  in the world, standing at a height of 1,670 ft, officially opens.