 
The 2021 New York City borough president elections were held on November 2, 2021. Four of the five incumbent borough presidents were unable to run for reelection due to term limits. Only the Queens borough president was eligible to seek re-election after winning a special election in 2020 (and won re-election).
The winning candidates were as follows:
Overview.
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 votes
Staten Island.
Incumbent Republican James Oddo was term-limited and could not run for a third consecutive term.
Republican primary.
Endorsements.
 ;templatestyles src="Endorsements box/styles.css"/ ;Vito Fossella
Executive officials
Federal
Local officials
Organizations
 ;templatestyles src="Endorsements box/styles.css"/ ;Steven Matteo
Organizations
 ;templatestyles src="Endorsements box/styles.css"/ ;Leticia Remauro
Executive officials
Organizations
Results.
! scope="col" colspan="2" style="color:inherit;background-color:var(--background-color-neutral, #eee);" |Party
! scope="col" style="color:inherit;background-color:var(--background-color-neutral, #eee);" |Candidate
! scope="col" style="color:inherit;background-color:var(--background-color-neutral, #eee);" |Maximumround
! scope="col" style="color:inherit;background-color:var(--background-color-neutral, #eee);" |Maximumvotes
! scope="col" style="color:inherit;background-color:var(--background-color-neutral, #eee);" |Share inmaximumround
! scope="col" style="color:inherit;background-color:var(--background-color-neutral, #eee);width: 40ex "|Maximum votesFirst round votesTransfer votes
ex" ;​ex" ;​
Democratic primary.
Endorsements.
 ;templatestyles src="Endorsements box/styles.css"/ ;Lorraine Honor
Federal officials
Organizations
 ;templatestyles src="Endorsements box/styles.css"/ ;Mark Murphy
State officials
Local officials
Labor unions
Organizations
Results.
! scope="col" colspan="2" style="color:inherit;background-color:var(--background-color-neutral, #eee);" |Party
! scope="col" style="color:inherit;background-color:var(--background-color-neutral, #eee);" |Candidate
! scope="col" style="color:inherit;background-color:var(--background-color-neutral, #eee);" |Maximumround
! scope="col" style="color:inherit;background-color:var(--background-color-neutral, #eee);" |Maximumvotes
! scope="col" style="color:inherit;background-color:var(--background-color-neutral, #eee);" |Share inmaximumround
! scope="col" style="color:inherit;background-color:var(--background-color-neutral, #eee);width: 40ex "|Maximum votesFirst round votesTransfer votes
ex" ;​ex" ;​
General election.
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 votes
Notes.
Partisan clients
References.
 ;templatestyles src="Reflist/styles.css" / ;