|2021 in other calendars|
|From urbe condita||2774|
|- era||4717-4718 or
|- 60 year cycle|
- CCXXIX CCXXX
|- Vikram Sambat||2077-2078|
|- Shaka Samvat||1943-1944|
|- Nengō (era):||Reiwa 3|
|- Dangun era||4354|
|- Juche era||110|
|Thai solar calendar||2564|
- January: start of the new period of the European Union's Multiannual Financial Framework 2021-2027
- March 14: State elections in Rhineland-Palatinate and state elections in Baden-Württemberg
- March: Parliamentary elections in the Netherlands
- April 25: Early state elections in Thuringia
- May: Census in the member states of the European Union ( 2021 census )
- May: next general election expected in Scotland and Wales
- June: State election in Saxony-Anhalt
- XXXII. Summer Olympics in Tokyo
- XVI. Summer Paralympics in Tokyo
- G20 summit in Italy
- 75th anniversary of Indian independence
- September or October: Election to the 20th German Bundestag , election to the Berlin House of Representatives , state elections in Mecklenburg-Western Pomerania and local elections in Lower Saxony
- By December 31: The German nuclear power plants Brokdorf , Grohnde and Gundremmingen C are then to be shut down and dismantled
Politics and world events
- 11-15 October: World Congress for Intelligent Transport Systems in Hamburg
Culture and society
- April to October: The Federal Garden Show takes place in Erfurt .
- May: 65th Eurovision Song Contest in Rotterdam , Netherlands .
- February 7: Super Bowl LV at Raymond James Stadium in Tampa
- 11-21 February: 52nd Biathlon World Championships in Pokljuka , Slovenia
- 7-23 May: 84th Men's Ice Hockey World Championship in Minsk , Belarus and Riga , Latvia
- June 11th – 11th July: 16th Men's Football Championship in 12 countries
- Annular solar eclipse on April 15th over the continents of North America , Europe and the northern half of Asia
- total solar eclipse on December 4th, supposed to be visible mainly over Antarctica and parts of the South Pacific
- January 5th : 100th birthday of the Swiss writer, playwright and painter Friedrich Dürrenmatt
- February 16 : 200th birthday of the German Africa explorer Heinrich Barth
- March 19 : 300th anniversary of the death of the Italian Pope Clement XI.
- March 28 : 100th birthday of Herschel Grynszpan (resistance fighter)
- March 31 : 400th anniversary of the death of King of Spain Philip III. and (as Philip II) of Portugal
- April 9 : 200th birthday of the French modernist poet Charles Baudelaire
- April 16 : 100th birthday of the writer, actor and director Peter Ustinov
- April 20 : 200th anniversary of the death of the German physicist and chemist Franz Carl Achard
- April 27 : 100th birthday of the German actor and TV presenter Hans-Joachim Kulenkampff
- April 27 : 500th anniversary of the death of the Portuguese navigator Ferdinand Magellan
- May 5th : 200th anniversary of the death of the French Emperor Napoleon Bonaparte
- May 5 : 100th birthday of the US physicist Arthur L. Schawlow , Nobel Peace Prize laureate
- May 10 : 500th anniversary of the death of the German humanist and author Sebastian Brant
- May 21 : 100th birthday of the Soviet nuclear scientist Andrei Dmitrijewitsch Sakharov , winner of the Nobel Peace Prize
- May 12 : 100th birthday of the German artist Joseph Beuys
- July 6 : 100th birthday of American actress and first lady Nancy Reagan
- July 11th : 100th birthday of the German actress Ilse Werner
- August 31 : 200th birthday of the German physiologist and physicist Hermann von Helmholtz
- May 26 : 600th anniversary of the death of Sultan of the Ottoman Empire Mehmed I.
- June 8 : 500th anniversary of the death of the Emperor of China from the Ming Zhengde dynasty
- August 6 : 800th anniversary of the death of the Catholic Saint Dominic and founder of the Order of Preachers
- August 19 : 100th birthday of American screenwriter and television and film producer Gene Roddenberry
- September 12 : 100th birthday of the Polish philosopher, essayist and science fiction author Stanisław Lem
- September 14 : 700th anniversary of the death of the Italian poet and philosopher Dante Alighieri
- October 13 : 200th birthday of the German doctor, pathologist and politician Rudolf Virchow
- November 11 : 200th birthday of the Russian writer Fyodor Dostoyevsky
- December 1 : 500 anniversary of the death of the Italian Pope Leo X.
- December 12 : 200th birthday of the French writer Gustave Flaubert
- December 13 : 500th anniversary of the death of the Portuguese King Manuel I.
- January 3: 500th anniversary of the excommunication of Martin Luther by Pope Leo X. ( Reichstag zu Worms (1521) )
- Wikipedia's 20th birthday
- January 18: 150th anniversary of the founding of the German Empire
- July: 150th anniversary of the introduction of the Japanese currency, the yen
- August 23: 75th anniversary of the founding of the states of North Rhine-Westphalia and Schleswig-Holstein
- August 30: 75th anniversary of the founding of the state of Rhineland-Palatinate
- September: 800th anniversary of the end of the Damiette Crusade in Egypt
- September 10: 300th anniversary of the Peace of Nystad (end of the Great Northern War )
- September 11: 20th anniversary of the terrorist attacks on September 11, 2001
- September 21: 100th anniversary of the explosion of the Oppau nitrogen plant
- November 1st: 75th anniversary of the founding of Lower Saxony
- The film Networked - Johnny Mnemonic is set in 2021.
- The plot of the novel Do androids dream of electric sheep? by Phillip K. Dick is set in 2021. The book was later made into a film under the name Blade Runner .
- Council of the European Union: Multiannual Financial Framework 2021-2027: Negotiations - accessed on August 4, 2019
- Report Zeit Online - accessed on July 12, 2019
- NDR: Hamburg will host the World Transport Congress 2021. Retrieved November 1, 2017 .
- WM 2021 awarded to Pokljuka, WM 2023 awarded to Oberhof. In: tt.com . Austria Press Agency , September 9, 2018, accessed on March 20, 2020 .