Cyrus Spink ( born March 24, 1793 Berkshire County, Massachusetts, † May 31 1859 in Wooster, Ohio ) was an American politician. In 1859, he represented the state of Ohio in the U.S. House of Representatives.
In 1815, Cyrus Spink came to the Stark County in Ohio. In the local town of Kendal, he was employed for several years as a teacher. Until 1832 he held several local offices in Ohio, including in land surveying and as a district auditor. Between 1821 and 1822 he sat as an MP in the House of Representatives from Ohio. After 1832 he worked in Wooster commercially. Politically he belonged first to the Whig party. In 1846 he was a member of the State Board of Equalization and in June 1852 he participated as a delegate at the national convention of the Whigs. Later he joined the Republican Party, founded in 1854. In 1856 he was a director of the Ohio Penitentiary.
In the congressional elections of 1858 Spink was in the 14th electoral district of Ohio in the U.S. House of Representatives in Washington DC chosen, where he became the successor of Philemon Bliss on March 4, 1859. Shortly after the election, he fell ill. He died on 31 May 1859 before the inaugural session of Congress.