The 1820 Ohio gubernatorial election was held on October 10, 1820.
Incumbent Democratic-RepublicanGovernorEthan Allen Brown defeated former U.S. SenatorJeremiah Morrow and former U.S. RepresentativeWilliam Henry Harrison.
^The various sources differ on the number of scattering votes. The Journal of the Ohio House of Representatives gives the number as "about 250". The total shown is the sum of the individual county returns.
^Gubernatorial Elections, 1787-1997. Washington, D.C.: Congressional Quarterly Inc. 1998. p. 72. ISBN1-56802-396-0.
^Glashan, Roy R. (1979). American Governors and Gubernatorial Elections, 1775-1978. Westport, CT: Meckler Books. pp. 244–245. ISBN0-930466-17-9.
^Kallenbach, Joseph E.; Kallenbach, Jessamine S., eds. (1977). American State Governors, 1776-1976. Vol. I. Dobbs Ferry, N.Y.: Oceana Publications, Inc. p. 462. ISBN0-379-00665-0.