|1005 in topic|
|Lists of leaders|
|Political entities - State leaders - Religious leaders|
|Birth and death categories|
|Births – Deaths|
|Establishments and disestablishments categories|
|Establishments – Disestablishments|
|Ab urbe condita||1758|
|Balinese saka calendar||926–927|
|English Regnal year||N/A|
|Chinese calendar||甲辰年 (Wood Dragon)
3701 or 3641
— to —
乙巳年 (Wood Snake)
3702 or 3642
|- Vikram Samvat||1061–1062|
|- Shaka Samvat||926–927|
|- Kali Yuga||4105–4106|
|Japanese calendar||Kankō 2
|Minguo calendar||907 before ROC
|Seleucid era||1316/1317 AG|
|Thai solar calendar||1547–1548|
1131 or 750 or −22
— to —
1132 or 751 or −21
|Wikimedia Commons has media related to 1005.|
- January 13–January 18 – The Shanyuan Treaty is negotiated between the Liao Dynasty and the Song Dynasty. The Song agrees to pay an annual tribute to the Liao.
- Lê Trung Tông succeeds Lê Hoàn as the emperor of Vietnam, preceding anarchy and 8 months succession war with Long Ngân and other princes.
- October – Long Ngân is defeated and killed in Thạch Hà, by the hands of natives.
- Lê Ngoạ Triều succeeds Lê Trung Tông, killing him after just three days of reign, and beginning tyrannical executions.
- The Shūi Wakashū is compiled (earliest possible date).
- March 25 – Battle of Monzievard: Malcolm II succeeds Kenneth III as king of Scotland, killing him and his son Giric II of Scotland.
- Brian Boru makes a second expedition to the north, to take hostages from the northern states; during this expedition, he visits Armagh, making an offering of twenty ounces of gold to the church' and confirming to the apostolic see of Saint Patrick, ecclesiastical supremacy over the whole of Ireland (as recorded in the Book of Armagh).
- Danish raids continue on southern England.
- Ælfric of Abingdon leaves ships to the people of Wiltshire and Kent in his will, with his best one, equipped for sixty men, going to King Æthelred II.
- Aeddan ap Blegywryd, Prince of Gwynedd, succeeds Cynan ap Hywel.
- Pomerania revolts against the church.
- Schaffhausen starts minting its own coins.
- The Republic of Pisa conducts a military offensive against the Muslim strongholds, on the coast of Calabria.
- June 20 – Ali az-Zahir, Fatimid caliph (d. 1036)
- Pope Clement II (d. 1047)
- Bretislaus I (last possible date; d. 1055)
- Lanfranc, Archbishop of Canterbury (possible date; d. 1089)
- King Macbeth of Scotland (d. 1057)
- Bertha of Blois, Duchess consort of Brittany and a countess consort of Maine (d. c. 1080) (approximate date)
- Snorri Thorfinnsson, first European born in the Americas (Vineland) and later Viking chieftain (earliest possible date; d. c. 1090)
- March 25 – King Kenneth III of Scotland (in battle)
- Lê Hoàn, Vietnamese emperor
- October – Lê Trung Tông, Vietnamese emperor
- November 16 – Ælfric of Abingdon, Archbishop of Canterbury
- Abe no Seimei, Japanese mystic
- Sigmundur Brestisson, Faroese chieftain (murdered)
- Ma Yize, Arab astronomer who worked in the Chinese Song dynasty court
- Moody, TW; Martin, FX, eds. (1967). The Course of Irish History. Cork, Ireland: The Mercier Press. p. 113.
- Palmer, Alan; Palmer, Veronica (1992). The Chronology of British History. London: Century Ltd. pp. 47–48. ISBN 0-7126-5616-2.
- Benvenuti, Gino (1985). Le Repubbliche Marinare. Amalfi, Pisa, Genova e Venezia. Rome: Newton & Compton Editori. p. 41. ISBN 88-8289-529-7.