|Ab urbe condita||1798|
|Balinese saka calendar||966–967|
|English Regnal year||N/A|
|Chinese calendar||甲申年 (Wood Monkey)|
3741 or 3681
— to —
乙酉年 (Wood Rooster)
3742 or 3682
|- Vikram Samvat||1101–1102|
|- Shaka Samvat||966–967|
|- Kali Yuga||4145–4146|
|Japanese calendar||Kantoku 2|
|Minguo calendar||867 before ROC|
|Seleucid era||1356/1357 AG|
|Thai solar calendar||1587–1588|
1171 or 790 or 18
— to —
1172 or 791 or 19
|Wikimedia Commons has media related to 1045.|
- Emperor Go-Reizei ascends the throne of Japan.
- Edward the Confessor marries Edith of Wessex, and begins construction of Westminster Abbey in England.
- January 20 – Pope Sylvester III becomes the 146th pope, succeeding Benedict IX, who abdicated during the previous year.
- February – Pope Sylvester III is deposed (election deemed invalid); Pope Benedict IX is elected once more, becoming the 147th pope.
- May 5 – Pope Gregory VI becomes the 148th pope, following the resignation of Pope Benedict IX in exchange for money. There are growing allegations that simony is taking place during Gregory VI's reign.
- Movable type printing is invented by Bi Sheng in China.
- The Lingxiao Pagoda of China is built, during the Song Dynasty.
- The Qingli Reforms, put forth by the Chinese statesman Fan Zhongyan in 1043, are halted by their conservative ministerial peers, but will later influence reform efforts under Wang Anshi.
- Stephen, Count of Blois (approximately) (d. 1102)
- Huang Tingjian, famous Chinese calligrapher, painter, and poet (d. 1105)
- February 7 – Emperor Go-Suzaku of Japan (b. 1009)
- May 27 – Bruno of Würzburg, imperial chancellor of Italy (b. c. 1005)
- Hemma of Gurk, Austrian religious founder and countess (b. 980)
- Radbot, Count of Habsburg (b. 985)
- Adolphson, Mikael S. (2000). The Gates of Power: Monks, Courtiers, and Warriors in Premodern Japan. University of Hawaii Press. p. 77. ISBN 9780824823344.
- "Edward the Confessor". BBC - History. Retrieved May 30, 2018.
- "Westminster Abbey". www.westendatwar.org.uk. Retrieved May 30, 2018.
- "Sylvester III - pope or antipope". Encyclopedia Britannica. Retrieved May 30, 2018.
- "Gregory VI - pope". Encyclopedia Britannica. Retrieved May 30, 2018.
- "No. 894: Inventing Printing". www.uh.edu. Retrieved May 30, 2018.
- Ebrey, Patricia Buckley; Smith, Paul Jakov (2016). State Power in China, 900-1325. University of Washington Press. p. 192. ISBN 9780295998480.
- Ebrey, Patricia Buckley; Smith, Paul Jakov (2016). State Power in China, 900-1325. University of Washington Press. p. 172. ISBN 9780295998480.
- Westfahl, Gary (2015). A Day in a Working Life: 300 Trades and Professions through History [3 volumes]: 300 Trades and Professions through History. ABC-CLIO. p. 597. ISBN 9781610694032.
- Fu, Shen (2003). "Huang Tingjian". Oxford Art Online. Oxford University Press. doi:10.1093/gao/9781884446054.article.t039229. Retrieved May 30, 2018.
- "Gosuzaku, Emperor of Japan, 1009-1045". id.loc.gov. Retrieved May 30, 2018.
- "Bruno Saint, Bishop of Würzburg approximately 1005-1045". Worldcat. Retrieved May 30, 2018.
- "Hemma of Gurk, Saint approximately 980-approximately 1045". Worldcat. Retrieved May 30, 2018.
- Leeson, R. (2014). Hayek: A Collaborative Biography: Part II, Austria, America and the Rise of Hitler, 1899-1933. Springer. p. 1. ISBN 9781137325099.