2002 (MMII) was a common year starting on Tuesday of the Gregorian calendar, the 2002nd year of the Common Era (CE) and Anno Domini (AD) designations, the 2nd year of the 3rd millennium, the 2nd year of the 21st century, and the 3rd year of the 2000s decade.
- January 1 – The Treaty on Open Skies, initially signed in 1992, officially enters into force.
- January 1 – Euro notes and coins started to be used in France, Spain, Germany, Italy, Portugal, Greece, Finland, Luxembourg, Belgium, Austria, the Republic of Ireland, and the Netherlands.
- January 5 – A light aircraft crashes into a Tampa, Florida building, bringing fear of a repeat September 11, 2001 attacks.
- January 10 – Enrique Bolaños became the President of the Republic of Nicaragua.
- January 16 – The UN Security Council agreed to forbid selling arms to Osama bin Laden, Al-Qaida, and the Taliban and freezes their assets.
- January 17 – Mount Nyiragongo in the Democratic Republic of the Congo erupts, leaving about 400,000 people without a home.
- January 23 – Wall Street Journal reporter Daniel Pearl is kidnapped in Pakistan, accused of being a CIA agent.
- January 31 – A large section of the Antarctic Larsen Ice Shelf begins breaking up, eventually consuming about 3,250 km² (1,254 miles²) after 35 days.
- February 8-24 – The 19th Olympic Winter Games were held in Salt Lake City, Utah.
- April 28 – Green Party of Pakistan is formed
- May 20 – Independence of East Timor.
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