The Hon Arthur Duff (1743 – 2 June 1805) was a Scottish Member of Parliament who served during the latter part of the 1770s.
He was appointed Steward of the Manor of East Hendred on 29 April 1779 to allow Lord William Gordon to be brought into Parliament.
He never married, and latterly lived at the estate at Orton, Moray he had inherited from his father.
The first Arthur's Bridge, opened in 1852, was named after Duff.
This article about a Member of the Parliament of Great Britain (1707–1800) representing a Scottish constituency is a stub.