1103 was a common year.
|Centuries:||11th century – 12th century – 13th century|
|Decades:||1070s 1080s 1090s – 1100s – 1110s 1120s 1130s|
|Years:||1100 1101 1102 – 1103 – 1104 1105 1106|
- April 27 – Anselm, Archbishop of Canterbury, goes into exile after falling out with Henry I of England
- Amadeus III becomes Count of Savoy
- Bohemund I of Antioch is released from imprisonment among the Turks
- The Scandinavian city of Lund becomes a see within the Roman Catholic Church