John de Winchester (died 1460) was a 15th-century English cleric who distinguished himself as an administrator and bishop in Scotland.

[2] After entering Scotland, James was chaplain and secretary to the king, who bestowed on Winchester Alyth in Angus and helped him become Chancellor of Dunkeld.

[3] Winchester was out of Scotland in 1432, attending the Council of Basel on behalf of King James; he was also Clerk of the Register in this year.

[6] Winchester's services to the king were rewarded further in November 1435 when, after the death of Columba de Dunbar, he was elected as Bishop of Moray.

[9] Bishop Winchester died April, 1460, probably at Spynie Castle[10] and was buried in St Mary's Aisle within Elgin Cathedral.