Sir William Cheyne (died 1443) was an English lawyer, and Chief Justice of the King's Bench from 1424 until 1438.
[1] Cheyne was appointed justice of the King's Bench on 16 June 1415, and was reappointed in 1422, on the accession of Henry VI.
Two years later, on 23 January 1424, he was promoted to Chief Justice, on the death of the incumbent William Hankford.
He died in 1443 and left his possessions – £400 and lands in Sussex and Dorset valued at £80 per annum – to his son John.
Cheyne was buried in the church of St Benet Paul's Wharf in London.