2001 instance of calendar year
May
May 7 – In Banja Luka, Bosnia and Herzegovina, an attempt is made to reconstruct the historic 16th-century Ferhadija Mosque. Serbian nationalists respond with riots and mass violence against Bosnian Muslims.
May 9 – Accra Sports Stadium disaster: 126 people are killed in a crowd crush in Accra during a sports riot.
May 13 – The House of Freedoms coalition led by Silvio Berlusconi wins the Italian general election.
May 18 – 2001 HaSharon Mall suicide bombing: A Hamas suicide bomber kills six people in Netanya, Israel. The Israeli government responds with the first use of airstrikes against Palestine since 1967.
May 21 – The Končulj Agreement results in the disarmament of the Liberation Army of Preševo, Medveđa and Bujanovac, ending the Insurgency in the Preševo Valley.
May 22
28978 Ixion, a large trans-Neptunian object and a possible dwarf planet, is discovered during the Deep Ecliptic Survey.
The Stockholm Convention on Persistent Organic Pollutants is adopted by 127 countries to limit pollution internationally.
May 24
Sherpa Temba Tsheri, 15, becomes the youngest person to reach the summit of Mount Everest.
The Versailles Wedding Hall collapses in Jerusalem, Israel, killing 23 people and injuring 380 others.
May 26 – The African Union is formed to replace the Organisation of African Unity. It will begin operation the following year.
May 28 – 2001 Central African Republic coup d'état attempt: Central African forces led by André Kolingba carry out a failed attempt to overthrow the government of the Central African Republic. Dozens are killed in the ensuing violence.
May 31
Lithuania joins the World Trade Organization.
Research into Crohn's disease confirms that it is identified with mutation of the NOD2 gene.
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