Mills Gardner ( born January 30, 1830 in Russellville, Brown County, Ohio; † February 20, 1910 in Washington Court House, Ohio ) was an American politician. Between 1877 and 1879 he represented the State of Ohio in the U.S. House of Representatives.
Mills Gardner attended the public schools in Highland County and Rankin Academy in Ripley. After that, he worked for some as a clerk in a dry goods store. After a subsequent law degree in 1855 and its recent approval as a lawyer, he began in Washington Court House to work in this profession. At the same time he proposed as a member of the Republican Party launched a political career. Between 1855 and 1859 he was a prosecutor in Fayette County. In the years 1862 and 1863 he sat in the Senate of Ohio; 1866 to 1867 he was a member of the local House of Representatives. In 1872 he took part in a constitutional convention of his state as a delegate.
In the congressional elections of 1876 Gardner was the third electoral district of Ohio in the U.S. House of Representatives in Washington DC chosen, where he succeeded the Democrat John S. Savage on March 4, 1877. Since he resigned in 1878 to further candidacy, he was able to complete only one term in Congress until March 3, 1879. After the end of his time in the U.S. House of Representatives Gardner practiced as a lawyer again. He died on 20 February 1910 in Washington Court House.