: 10th century
- 11th century
- 12th century
Decades: 980s 990s 1000s 1010s 1020s - 1030s - 1040s 1050s 1060s 1070s 1080s
Years: 1025 1026 1027 1028 1029 - 1030 - 1031 1032 1033 1034 1035
- Battle of Stiklestad ensured the Christianization of Norway.
- Founding of the city of Tartu in Estonia
- Olav Haraldsson, died at Battle of Stiklestad but was later canonized and declared as St. Olav.\n