The 2013 Boston mayoral election occurred on Tuesday, November 5, 2013. Incumbent mayor Thomas Menino had declined to run for re-election to a sixth term. A non-partisan preliminary election was held on Tuesday, September 24, 2013. 12 candidates made the ballot to replace Menino, with state representative Marty Walsh and at-large city councilor John R. Connolly advancing to the general election. Walsh was elected to his first term, defeating Connolly by 3% of the vote, and was inaugurated on Monday, January 6, 2014.

Martin Joseph Walsh is an American politician and trade union official who served as the mayor of Boston from 2014 to 2021 and as the 29th United States Secretary of Labor from 2021 to 2023. A member of the Democratic Party, Walsh resigned from his position as the US Secretary of Labor in March 2023 in order to accept a position as executive director of the National Hockey League Players' Association. Before his mayoralty, he served as a member of the Massachusetts House of Representatives, representing the 13th Suffolk district from 1997 until 2014. As a trade union member, Walsh worked his way up to serve as the head of the Boston Building Trades Council from 2011 until 2013.