William "Bill" Lafferty (1931–2003) was a politician, Canadian Forces officer and newspaper columnist from Northwest Territories, Canada.
He served as a member of the Northwest Territories Legislature from 1975 until 1979.
He won the Mackenzie-Laird electoral district defeating incumbent Nick Sibbeston.
Lafferty would only serve a single term in office and would not return when the legislature was dissolved in 1979.
This article about a Northwest Territories politician is a stub.