January 10, 2011 – 2010–2011 Queensland floods: Torrential rain in the Lockyer Valley region of South East Queensland, Australia causes severe flash flooding, killing 9 people.

February 3, 2011 – New Year’s Day in Chinese calendar. Start of the year of the Metal Rabbit in Chinese astrology.

February 25, 2011 – In the Irish general election, the Fianna Fáil-led government suffered the worst defeat of a sitting government since the formation of the Irish state in 1921.

May 13, 2011 – the 2011 Charsadda bombing in the Charsadda District of Pakistan two bombs exploded killing 98 and wounding 140.

July 22, 2011 – Norway is the victim of twin terror attacks, the first being a bomb blast which targeted government buildings in central Oslo, the second being a massacre at a youth camp on the island of Utøya.

September 17, 2011 – Occupy Wall Street movement began in Zucotti Park, New York City.

September 20, 2011 – The United States ends its “Don't Ask, Don't Tell” policy, allowing gay men and women to serve openly for the first time.

October 15, 2011 – Global protests break out in 951 cities in 82 countries.

December 15, 2011 – American forces withdraw from Iraq after a 9-year long campaign.

December 30, 2011 – Due to a change of time zone the day is skipped in Samoa and Tokelau.

January 8, 2011 – Prince Vincent and Princess Josephine of Denmark, twin children of Frederik, Crown Prince of Denmark