William Blackstone Hubbard (August 26, 1795 – January 5, 1866) was a politician, railroad president, banker and Masonic Grand Master in the U.S state of Ohio.

[1] Hubbard was Belmont County Prosecuting Attorney for several years[1] and was then elected to the Ohio State Senate for the 26th and 27th General Assemblies, serving 1827 to 1829.

[2] In February 1830, a bill he had drafted titled "An Act to incorporate the Ohio Canal and Steubenville Railroad Company" was passed.

[1] In 1831, Hubbard was elected to the Ohio House of Representatives for the 30th General Assembly and he was re-elected to the 31st, serving 1831 to 1833.

[5] He was president of the Columbus and Xenia Railroad, and was a director or official of other rail companies.

[5][7] On a visit to New York, Hubbard received his Master Mason degree at Rising Sun Lodge No.