William Salter (died 1404) was an English politician.
Salter was from Devizes, Wiltshire, and represented his town in Parliament. He was a weaver, and one of the wealthiest men in his area. He was married to Margaret, and they had one daughter. His grandson, Richard Bytefynger, was his main heir.
Salter was Member of Parliament for Devizes in February 1383, 1386, February 1388, January 1397, September 1397 and 1399.[1]