2021 Atlantic City mayoral election

The 2021 Atlantic City mayoral election was held on November 2, 2021, to elect the Mayor of Atlantic City, New Jersey. Primary elections were held on June 7. Incumbent Democrat Marty Small Sr., who was running for a full term after being elected to the mayor position by City Council following Frank Gilliam's resignation, won re-election to his first full term against Republican opponent Tom Forkin and several other opponents running third-party.

Background
Following the arrest of mayor Frank Gilliam in 2019, then-Councilman Marty Small became the acting mayor of Atlantic City in a 8–0 vote by the City Council.

The 2021 election was held to determine the next mayor of Atlantic City. Small ran against a largely divided opposition and won a majority of the 6,248 ballots cast in the election. Tom Forkin won the 6th Ward, which includes the Lower Chelsea and Chelsea Heights neighborhoods.