1040s

The 1040s was a decade that began on 1 January 1040 and ended on 31 December 1049. It is distinct from the decade known as the 105th decade which began on January 1, 1041 and ended on December 31, 1050.

 Significant people 
 King Macbeth of Scotland (d. 1057)
 Godwin, Earl of Wessex (d. 1053)
 El Cid (b. 1040)