William Thomas Pipes (April 15, 1850 – October 7, 1909) was a politician in Nova Scotia, Canada.

William S. Fielding was at the time editor of the Halifax Morning Chronicle and could have become premier, but declined due to his lack of financial resources.

During that year's election, Pipes referred to Fielding's campaign as "the putrid carcass of repeal".

In 1887, Pipes again attempted to win a seat in the federal House of Commons, but again failed to dislodge Tupper.

In 1906, he returned to provincial politics, and served as Attorney-General in the cabinet of Premier George Henry Murray until his death in Boston.