Frank Wills (1822–1857) was a British-born architect who is associated with the design of early Gothic Revival churches in North America.

Frank Wills was born in Exeter, Devon, England in 1822, where he started working under John Hayward.

He moved to New York City, began an architectural firm in late 1847 and married Emily Coster in 1848.

In 1850 he published Ancient Ecclesiastical Architecture and Its Principles, Applied to the Wants of the Church at the Present Day.

Frank Wills died suddenly in Montreal in 1857, where he was working on Christ Church Cathedral.