Calvary Morris (15 January 1798-13 October 1871) was a member of the US House of Representatives (W-OH 6) from 4 March 1837 to 3 March 1843, succeeding Samuel F. Vinton and preceding Henry St. John. Born in Charleston, West Virginia, he settled in Athens, Ohio in 1819 and served as county sheriff from 1823 to 1827, in the state house from 1827 to 1829 and from 1835 to 1836, in the state senate from 1829 to 1835, in Congress, and as a merchant in Cincinnati.