Hiram Gardner (1800 Dutchess County, New York - March 13, 1874 Lockport, Niagara County, New York) was an American lawyer and politician from New York.
He was admitted to the bar and commenced practice in Lockport in 1822. He was a member from Niagara County of the New York State Assembly and a presidential elector in 1836. He was the Secretary of the New York Electoral College, and cast his vote for Martin Van Buren like all the New York electors.
He was a delegate to the New York State Constitutional Convention of 1846.
He was First Judge and Surrogate of the Niagara County Court from July 1847 to December 1851.
He was a Canal Commissioner from 1859 to 1861, elected on the Republican ticket.