The 2005 Seattle mayoral election took place November 8, 2005. Incumbent Mayor Greg Nickels was reelected to a second term. As of 2022, this is the most recent Seattle mayoral election in which the incumbent was re-elected to a second term.
Primary.
The primary was held September 20, 2005.
! 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" |%
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! colspan="3" style="text-align: right; margin-right: 0.5em" | Turnout
General election.
The general election was held November 8.
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! 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" |%
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! colspan="3" style="text-align: right; margin-right: 0.5em" | Turnout
References.
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