The 1900 Missouri State Treasurer election was held on 6 November 1900 in order to elect the state treasurer of Missouri. Democratic nominee Robert P. Williams defeated Republican nominee William S. Fleming, Social Democratic nominee William M. Brandt, Prohibition nominee Samuel S. Allen, People's Progressive nominee DeWitt C. Fuller and Socialist Labor nominee H. M. Graber.
General election.
On election day, 6 November 1900, Democratic nominee Robert P. Williams won the election by a margin of 38,708 votes against his foremost opponent Republican nominee William S. Fleming, thereby retaining Democratic control over the office of state treasurer. Williams was sworn in as the 20th state treasurer of Missouri on 14 January 1901.
Results.
! scope="col" colspan="2" style="width: 15em" |Party
! scope="col" style="width: 17em" |Candidate
! scope="col" style="width: 5em" |Votes
! scope="col" style="width: 3.5em" |%
! colspan="3" style="text-align:right;" | Total votes
References.
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