2003 has part(s) August 2003
May
May 1
2003 Bingöl earthquake: A 6.4 Mw  earthquake strikes in Bingöl, Turkey, killing 177 people.
U.S. President George W. Bush declares an end to the invasion of Iraq in the Mission Accomplished speech. Hostilities would continue for several years during a period of Iraqi insurgency.
May 11
Benvenuto Cellini's Cellini Salt Cellar table sculpture is stolen from the Kunsthistorisches Museum in Vienna.
Lithuania approves joining the European Union in a referendum.
2003 Sri Lanka cyclone: A cyclone makes landfall in Sri Lanka, killing 260 people and causing the country's worst natural disaster in 50 years.
May 12
In Riyadh, Saudi Arabia, over 30 people are killed in multiple bombings at a housing compound, mostly foreign expatriates.
2003 Znamenskoye suicide bombing: Chechen suicide bombers attack a government office in Znamenskoye, Russia, killing at least 59 people.
May 15 – 2003 Argentine general election: Néstor Kirchner becomes president-elect of Argentina after Carlos Menem withdraws from the runoff election.
May 16 – 2003 Casablanca bombings: Islamist militants affiliated with Al-Qaeda in the Islamic Maghreb carry out a series of suicide bombings in Casablanca, Morocco, killing at least 41 people.
May 17 – Slovakia approves joining the European Union in a referendum.
May 21 – Algeria The 6.8 Mw  Boumerdès earthquake shakes the suburb of the Algerian capital Algiers with a maximum Mercalli intensity of X (Violent), killing an estimated 2,266 people.
May 23 – Dewey, the world's first cloned deer is born, at Texas A&M University.
May 26 – A constitutional referendum is held in Rwanda.
May 28 – Prometea, the world's first cloned horse, is born.August
August 1 – Social networking service Myspace is launched.
August 11
The Second Liberian Civil War comes to an end after President Charles Taylor resigns and flees the country.
NATO takes over command of the peacekeeping force in Afghanistan, marking its first major operation outside Europe in its 54-year-history.
August 14 – The Northeast blackout of 2003 cuts electricity to the northeastern United States and parts of Canada.
August 19
In the Canal Hotel bombing in Baghdad 22 people are killed, among them United Nations' Special Representative in Iraq Sérgio Vieira de Mello.
Shmuel HaNavi bus bombing: A Palestinian suicide bomber kills at least 18 people in a bus bombing in Jerusalem.
August 25
The Spitzer Space Telescope is launched from Cape Canaveral, Florida.
Car bombs explode at Gateway of India and Zaveri Bazaar in Mumbai, claiming 54 lives and injuring 244 others. Pakistan-based Lashkar-e-Taiba is blamed for the attack.
August 27
Mars makes its closest approach to Earth in over 60,000 years.
The first six-party talks, involving South and North Korea, the United States, China, Japan and Russia, convene to find a peaceful resolution to the security concerns of the North Korean nuclear weapons program.
August 29 – Imam Ali mosque bombing: A bomb kills at least 125 people, including Mohammad Baqir al-Hakim, at a Shia mosque in Najaf, Iraq.
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