The 1966 Missouri State Auditor election was held on 8 November 1966 in order to elect the state auditor of Missouri. Democratic nominee and incumbent state auditor Haskell Holman defeated Republican nominee William T. Zimmerman.
General election.
On election day, 8 November 1966, Democratic nominee Haskell Holman won re-election by a margin of 87,453 votes against his opponent Republican nominee William T. Zimmerman, thereby retaining Democratic control over the office of state auditor. Holman was sworn in for his fourth term on 9 January 1967.
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.
 ;templatestyles src="Reflist/styles.css" / ;