From Infogalactic: the planetary knowledge core
|Centuries:||10th century – 11th century – 12th century|
|Decades:||990s 1000s 1010s – 1020s – 1030s 1040s 1050s|
|Years:||1024 1025 1026 – 1027 – 1028 1029 1030|
|1027 by topic|
|Lists of leaders|
|Birth and death categories|
|Births – Deaths|
|Establishments and disestablishments categories|
|Establishments – Disestablishments|
|Ab urbe condita||1780|
|English Regnal year||N/A|
|Chinese calendar||丙寅年 (Fire Tiger)
3723 or 3663
— to —
丁卯年 (Fire Rabbit)
3724 or 3664
|- Vikram Samvat||1083–1084|
|- Shaka Samvat||949–950|
|- Kali Yuga||4128–4129|
|Japanese calendar||Manju 4
|Minguo calendar||885 before ROC
|Seleucid era||1338/1339 AG|
|Thai solar calendar||1569–1570|
|Wikimedia Commons has media related to 1027.|
- March 26 – Pope John XIX crowns Conrad II Holy Roman Emperor.
- May 14 – Henry I is crowned king of France at Reims Cathedral.
- approx. date – Ealdred becomes abbot of Tavistock in England.
- August 16 – Bagrat IV becomes king of Georgia on the death of his father. He will hold the throne until his own death in 1072.
- Civil war begins in Japan.
- This is the first year of the first rabqung (60-year) cycle started in the Tibetan calendar.
- As recorded in the Song Shi, the Song Dynasty Chinese engineer Yan Su reinvents the 3rd-century south-pointing chariot, a mechanical-driven compass vehicle.
- Publication of The Book of Healing (Arabic: کتاب الشفاء Kitab Al-Shifaʾ, Latin: Sufficientia), a comprehensive scientific and philosophical encyclopedia written by the Persian polymath Avicenna (Abū ʿAlī ibn Sīnā).
- August 16 – King George I of Georgia (b. 998)
- Abu'l-Qasim al-Husayn ibn Ali al-Maghribi, Arab statesman and writer (b. 981)