|Centuries:||10th century · 11th century · 12th century|
|Decades:||1000s · 1010s · 1020s · 1030s · 1040s · 1050s · 1060s|
|Years:||1027 · 1028 · 1029 · 1030 · 1031 · 1032 · 1033|
|1030 by topic|
|Lists of leaders|
|Birth and death categories|
|Births – Deaths|
|Establishments and disestablishments categories|
|Establishments – Disestablishments|
|Ab urbe condita||1783|
|English Regnal year||N/A|
|Chinese calendar||己巳年 (Earth Snake)|
3726 or 3666
— to —
庚午年 (Metal Horse)
3727 or 3667
|- Vikram Samvat||1086–1087|
|- Shaka Samvat||951–952|
|- Kali Yuga||4130–4131|
|Japanese calendar||Chōgen 3|
|Minguo calendar||882 before ROC|
|Seleucid era||1341/1342 AG|
|Thai solar calendar||1572–1573|
|Wikimedia Commons has media related to 1030.|
- June – Stephen I of Hungary forces the invading armies of the Holy Roman Empire led by Conrad II to retreat back to Germany.
- July 29 – Battle of Stiklestad (Norway): Olaf II of Norway loses to his pagan vassals and is killed in the battle. He is later canonized and becomes the patron saint of Norway and Rex perpetuum Norvegiae ('the eternal king of Norway').
- The city of Kaunas in Lithuania is founded.
- First mention of Tartu, Estonia, as Yaroslav the Wise of Novgorod and Kiev raids the Estonian fortress of Tarbatu and founds a fort named Yuryev.
- Earliest mention of Thalwil, Switzerland.
- Henry I of France revolts against his father Robert.
- The Song Dynasty Chinese historian and scholar Ouyang Xiu obtains his jinshi degree at the age of only 22 by passing the highest level examinations in the country (his third attempt), leading him into a distinguished path as a scholar-official.
- Byzantine Emperor Romanus III invades Syria and is defeated at the Battle of Azaz.
- Masud seizes the throne of the Ghaznavid Empire after the death of his father Mahmud.
- July 21 – Kyansittha, King of Burma (d. 1112)
- July 26 – Stanislaus of Szczepanów (St. Stanislaw), Bishop of Kraków (martyred 1079)
- Baldwin VI, Count of Flanders (d. 1070)
- Vsevolod I of Kiev (d. 1093)
- January 31 – William V, Duke of Aquitaine (b. 969)
- April 30 – Mahmud of Ghazni
- July 19 – Adalberon, bishop of Laon
- July 29 – King Olaf II of Norway (b. 995)