William Saxey or Saxei was an English-born judge in Ireland of the late Elizabethan and early Stuart era. He was an unpopular and controversial figure with a reputation for corruption and misanthropy.

The chief justice of Munster was the senior of the two judges who assisted the Lord President of Munster in judicial matters. Despite his title of Chief Justice, full judicial authority was vested in the lord president, who had "power to hear and determine at his discretion all manner of complaints in any part of the province of Munster", and also had powers to hold commissions of oyer and terminer and gaol delivery.