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|Establishments and disestablishments categories|
|Establishments – Disestablishments|
|Ab urbe condita||1754|
|Balinese saka calendar||922–923|
|English Regnal year||N/A|
|Chinese calendar||庚子年 (Metal Rat)
3697 or 3637
— to —
辛丑年 (Metal Ox)
3698 or 3638
|- Vikram Samvat||1057–1058|
|- Shaka Samvat||922–923|
|- Kali Yuga||4101–4102|
|Japanese calendar||Chōhō 3
|Minguo calendar||911 before ROC
|Seleucid era||1312/1313 AG|
|Thai solar calendar||1543–1544|
1127 or 746 or −26
— to —
1128 or 747 or −25
|Wikimedia Commons has media related to 1001.|
- March 17 – The Buddhist ruler of Butuan, in the Philippines (P’u-tuan in the Sung Dynasty records), Sari Bata Shaja, makes the first tributary mission to China.
- Changbai Mountains volcano, located on the present-day Chinese-Korean border, erupts with a force of 6.5, the fourth largest Holocene blast (approximate date).
- The Tao/Tayk region is annexed by the Byzantines, as the Theme of Iberia.
- Mahmud of Ghazni, Muslim leader of Ghazni, begins a series of raids into northern India, establishing the Ghaznavid Empire across most of today's Afghanistan, eastern Iran, and Pakistan.
- Jayapala suffers defeat from the Ghaznavid Empire, near Peshawar.
- Former emperor Đinh_Phế_Đế dies, while supressing the Cửu Long Rebellion in Thanh Hoa Province.
- Khmer King Jayavarman V is succeeded by Udayadityavarman I and/or Suryavarman I.
- Construction begins on the Liaodi Pagoda, the tallest pagoda in Chinese history (completed in 1055).
- Oqropiri (Ioane I), Svimeon III and Melkisedek I are Catholicoi of Iberia within one year.
- February 6 – After leading the revolt against Emperor Otto III and expelling the Crescentii, Gregory I, Count of Tusculum is named "Head of the Republic".
- July 31 – Emperor Otto III confirms the possessions of Ulric Manfred II of Turin, and grants him privileges.
- July – Sergius II becomes Patriarch of Constantinople.
- Byzantine Emperor Basil II attempts to reconquer Bulgaria.
- Robert II, King of France, marries for the third time, with Constance Taillefer d'Arles.
- Otto III, Holy Roman Emperor has Charlemagne's vault opened (see Aachen Cathedral).
- The First Battle of Alton: Danish invaders defeat the English.
- Battle of Pinhoe: Vikings defeat the Anglo-Saxons in Devon.
- Boleslaw I of Poland begins ruling parts of Slovakia.
- Bryachislav of Polotsk begins ruling Polotsk.
- Werner I, Bishop of Strasbourg begins ruling the Archbishopric of Strasbourg.
- Ermengol I of Urgell makes his second voyage to Rome.
- Þorgeirr Ljósvetningagoði ends being a lawspeaker in Iceland's Althing.
- Ælfgar, bishop of Elmham, is consecrated.
- Æthelred becomes Bishop of Cornwall, and dies shortly after that.
- The town of Lloret de Mar is founded in Catalonia.
- The first reference is made to Khotyn, Ukrainian town,  and to Nyalka, Hungarian village, as to Chimudi.
- Vikings, led by Leif Eriksson, establish small settlements in and around Vinland in North America (approximate).
- King Edward the Martyr of England is canonized.
- A tomb of Saint Ivo (possibly) is uncovered in Huntingdonshire.
- March 29 – Sokkate, king of the Pagan dynasty of Burma (d. 1044)
- Abbasid Caliph Al-Qa'im (d. 1075)
- King Duncan I of Scotland (d. 1040)
- Godwin, Earl of Wessex (d. 1053)
- Herluin de Conteville, Norman nobleman (d. 1087)
- Ingegerd Olofsdotter, Swedish princess and a Grand Princess of Kiev, daughter of Olof Skötkonung (d. 1049)
- December 21 – Hugh of Tuscany, margrave of Tuscany (b. 950)
- Athelstan, Bishop of Elmham
- Conrad of Ivrea, margrave of Ivrea
- Đinh Phế Đế, the second and the last king of Đinh dynasty
- Empress Fujiwara no Teishi of Japan (b. 977)
- Izyaslav Vladimirovich of Polotsk
- Ja'far ibn al-Furat, Ikhshidid and Fatimid vizier (b. 921)
- Jayapala, Emperor of Shahiya dynasty
- Jayavarman V, King of the Khmer Empire
- Saint Theobald (b. 927)
- Wang Yucheng, Chinese poet (b. 954)
- Ziri ibn Atiyya, Emir of Morocco, eventual effects of stab wounds