Editing TIMELINE (section)

===March 2004===
* March 2 - John Kerry effectively clinches the 2004 U.S. Democratic Party presidential nomination by winning 9 out of 10 "Super Tuesday" primaries and caucuses.
* March 2 - NASA announces that the Mars rover MER-B (Opportunity) has confirmed that its landing area was once drenched in water.
* March 10 - Five British men are released from detention at Camp Delta, Guantanamo Bay. After they land at RAF Brize Norton, 4 of them are immediately arrested for questioning.
* March 11 - Simultaneous explosions on rush hour trains in Madrid kill 190 people.
* March 12 - Following the March 11 terrorist attacks in Madrid, millions of protesters take to the streets of Spanish cities against terrorism.
* March 14 - Two suicide bombers kill 11 Israeli civilians in Ashdod, Israel.
* March 14 - Spanish legislative election, 2004: The incumbent government led by José María Aznar is defeated by the Socialist José Luis Rodríguez Zapatero.
* March 14 - Russian presidential election, 2004: Vladimir Putin easily wins a second term.
* March 15 - The new Spanish Government announces that it will withdraw Spain's 1,300 troops in Iraq.
* March 17 - A pogrom-like organized violence breaks out over 2 days in Kosovo. Nineteen people are killed, 139 Serbian homes burned, schools and businesses vandalized, and over 30 Orthodox monasteries and churches burned and destroyed.
* March 19 - The UN launches a political corruption investigation due to the scandal over its Iraqi Oil for Food program.
* March 20 - President Chen Shui-bian wins the Taiwanese presidential election by 0.2% of the vote. The day before, he and Vice President Annette Lu were 'shot'. Lien Chan refuses to concede and demands a recount. A controversial 'peace referendum' opposed by the People's Republic of China is invalidated.
* March 21 - Malaysian general election, 2004: The incumbent Barisan Nasional party wins 198 out of 219 seats in the Malaysian Parliament.
* March 21 - Salvadoran presidential election, 2004: Antonio Saca is elected President of El Salvador (inaugurated June 1).
* March 22 - Palestinians protest in the streets after an Israeli helicopter gunship fires a missile at the entourage of Sheikh Ahmed Yassin in Gaza City, killing him and 7 others.
* March 22 - Child pornography charges against Paul Reubens (Peewee Herman) are dropped, after he pleads guilty to a separate "misdemeanor obscenity" charge.
* March 25 - British Prime Minister Tony Blair visits Libyan leader Colonel Muammar al-Qaddafi, in return for the dismantling of Libya's WMD programme in December 2003 - the first time a major western leader has visited the nation in several decades.
* March 28 - In France, the government of Prime Minister Jean-Pierre Raffarin suffers a stunning and unprecedented defeat in regional elections.
* March 28 - The first ever South Atlantic hurricane makes landfall in South Brazil on the state of Santa Catarina - the hurricane is dubbed Hurricane Catarina.
* March 29 - The Republic of Ireland bans smoking in all enclosed work places, including restaurants, pubs and bars.
* March 29 - The largest expansion of NATO to date takes place, allowing Bulgaria, Estonia, Latvia, Lithuania, Romania, Slovakia and Slovenia into the organization.
* March 31 - Four American private military contractors working for Blackwater USA are killed, and their bodies mutilated, after being ambushed in Fallujah, Iraq.