Æthelbald (also Ethelbald or Aethelbald) may refer to:
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Æthelbald of Mercia
Æthelbald (also spelled Ethelbald or Aethelbald; died 757) was the King of Mercia, in what is now the English Midlands from 716 until he was killed in 757. Æthelbald was the son of Alweo and thus a grandson of King Eowa. Æthelbald came to th ...
, King of Mercia, 716–757
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Æthelbald, King of Wessex
Æthelbald (died 860) was King of Wessex from 855 or 858 to 860. He was the second of five sons of King Æthelwulf. In 850, Æthelbald's elder brother Æthelstan defeated the Vikings in the first recorded sea battle in English history, but he ...
, 856–860
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Æthelbald of York, Archbishop of York, 900–904
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Æthelbald (bishop), bishop of Sherborne (died between 918 and 925)
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