William D. Harrington (June 22, 1832 – April 15, 1904) was a merchant and political figure in Nova Scotia, Canada.
He represented Halifax County in the Nova Scotia House of Assembly from 1878 to 1886 as a Liberal-Conservative member.
He was born in Antigonish, Nova Scotia, the son of Aaron DeWolf Harrington and Rebecca Purcell.
Harrington was married three times: first to Amy Northrop, then to Jean Lydiard and finally to his cousin Elizabeth Harrington Wadsworth.
This article about a Progressive Conservative party Member of the Nova Scotia House of Assembly is a stub.