The 1986 Ohio State Treasurer election was held on November 4, 1986, to elect the Ohio State Treasurer. Primaries were held on May 6, 1986. Democratic incumbent Ohio State Treasurer Mary Ellen Withrow won re-election, defeating Republican Ohio State House Representative Jeff Jacobs by a comfortable margin of nine percentage points.

Democratic primary Candidates Mary Ellen Withrow, incumbent Ohio State Treasurer (1983–1994) Bryan E. Icard Campaign Withrow easily won renomination, defeating her primary challenger Bryan E. Icard by over 60 percentage points. Results

Republican primary Candidates Jeff Jacobs, Ohio State House Representative (1983–1986) Campaign Jacobs won the Republican nomination unopposed. Results

General election Candidates Mary Ellen Withrow, incumbent Ohio State Treasurer (1983–1994) (Democratic) Jeff Jacobs, Ohio State House Representative (1983–1986) (Republican) Results

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