William Henry Boulton (April 19, 1812 – February 15, 1874) was a lawyer and political figure in Canada West.

In 1858, he was considered "a colourful figure with varied interests" due to his seemingly polar opposite influences in office.

[2] Boulton was somewhat of a demagogue, occasionally opting to fire up opinion over action in order to retain his position, once warning electors that their interests would be sacrificed to the "Tobacco-smoking, Dram Drinking (a "dram" being a "small amount of whisky"), Garlick Eating Frenchmen" following the "Conservative debacle" of 1847–1848.

In 1844, he was elected to the Legislative Assembly of the Province of Canada, representing Toronto as a Conservative member.

He was known to oppose a bill proposing King's College to be a secular institution which was affiliated to the Church of England in Canada at that time.

He supported a surprise constitutional amendment which created the Legislative Council in order to develop “the elective system more fully".

After Boulton's death in 1874, Dixon would marry Professor Goldwin Smith a year later, in 1875.

However, Boulton himself would claim that he owed his 1851 election victory to "the bone and sinew of the country...the mechanics, the artisans, and the labourers".