The 2008 Kororoit state by-election was held on 28 June 2008 for the Victorian Legislative Assembly seat of Kororoit. The by-election was triggered when Labor MLA and former state Police Minister Andre Haermeyer resigned from parliament on 3 June. It was held on the same day as the by-election for the Victorian federal seat of Gippsland.
Kororoit was the third-safest seat in the state for the governing Labor Party, based on the results of the 2006 state election. The opposition Liberal Party contested the by-election, with state president David Kemp stating that the party would mount a "strong campaign". There had earlier been reports that the party might not run a candidate, as had been the case in the 2007 by-elections for the safe Labor seats of Albert Park and Williamstown.
Labor candidate Marlene Kairouz was elected as the new member for Kororoit.
Results.
! scope="col" colspan="2" style="width: 130px"|Party
! scope="col" style="width: 17em"|Candidate
! scope="col" style="width: 5em"|Votes
! scope="col" style="width: 3.5em"|%
! scope="col" style="width: 3.5em"| ;templatestyles src="Template:Tooltip/styles.css" / ;±%
! colspan="3" style="text-align:right;" | Total formal votes
! colspan="3" style="text-align:right;" | Informal votes
! colspan="3" style="text-align: right; margin-right: 0.5em" scope=row | Turnout
Distribution of preferences.
Because Labor attained an absolute majority of formal votes after the elimination of two candidates, no formal two candidate preferred count was determined for this contest.
! scope="col" colspan="2" style="width: 130px"|Party
! scope="col" style="width: 17em"|Candidate
! scope="col" style="width: 5em"|Votes
! scope="col" style="width: 3.5em"|%
! scope="col" style="width: 3.5em"| ;templatestyles src="Template:Tooltip/styles.css" / ;±%
References.
 ;templatestyles src="Reflist/styles.css" / ;