Gorboduc (Welsh: Gorwy or Goronwy) was a legendary king of the Britons as recounted by Geoffrey of Monmouth.

[1] Geoffrey does not state when Gorbuduc died, but he is not mentioned after the account of the strife between his sons.

The story, like that of his ancestor King Lear, was used by Elizabethans as a warning of the dangers of civil discord.

"A niece of King Gorboduc" is mentioned briefly by the Fool in Shakespeare's Twelfth Night.

"Gorboduc" is the name of a poem by John Ashbery that appears in the collection April Galleons (1987).