Æthelberht, Aethelbert or Ethelbert is a masculine given name. Notable people with the name include:
Æthelberht Æthelberht of Kent (c. 550–616), King of Kent Æthelred and Æthelberht (died c. 669), possibly legendary princes of Kent, saints and martyrs Æthelberht, king of the Hwicce () Æthelbert of Sussex (), King of Sussex Alberht of East Anglia (8th century), also Æthelberht I of East Anglia, ruler of East Anglia Æthelbert II of Kent (725–762), King of Kent Æthelbert of York (died 780), Archbishop of York, scholar and teacher Æthelberht II of East Anglia (died 794), saint and King of East Anglia Æthelberht of Whithorn (died 797), Bishop of Whithorn Æthelberht, King of Wessex (died 865)
Ethelbert Ethelbert Barksdale (1824–1893), American and Confederate politician Ethelbert Blatter (1877–1934), Swiss Jesuit priest and pioneering botanist in British India E. W. Bullinger (1837–1913), Anglican clergyman, biblical scholar and theologian Ethelbert Callahan (1829–1918), American lawyer and politician E. Ethelbert Downham (1839-1921), American businessmen and politician Ethelbert Nevin (1862–1901), American pianist and composer Ethelbert I. Singley (1888–1967), American politician Ethelbert Stauffer (1902–1979), German Protestant theologian and numismatist Ethelbert Talbot (1848–1928), 15th presiding bishop of the Episcopal Church Ethelbert Dudley Warfield (1861–1936), American professor of history and college president Ethelbert Watts (1846–1919), American diplomat in World War I Ethelbert White (1891–1972), English wood engraver and painter
See also St Ethelbert (disambiguation)