Trade Unionist and Socialist Coalition

The Trade Unionist and Socialist Coalition (TUSC) is a socialist electoral alliance in Britain. It was originally launched for the 2010 general election.

TUSC's co-founder was the RMT union general secretary Bob Crow. Members of the PCS, Unison, NEU, UCU, Napo and POA unions are on the steering committee. The biggest component section of TUSC was the RMT until they disaffiliated at the 2022 RMT AGM. The most prominent participating political groups are the Socialist Party and the Resistance Movement. TUSC stood 135 (parliamentary) candidates across England, Wales and Scotland at the 2015 general election and 619 the same day in local government elections.

The TUSC ceased standing candidates following the election of Jeremy Corbyn as leader of the Labour Party and endorsed his leadership, suspending electoral activity in November 2018. Following Corbyn's resignation and succession by Keir Starmer in 2020, the Socialist Party called for the relaunch of the alliance; the TUSC steering committee agreed to resume standing candidates in the 2021 UK local elections. It stood further candidates in the 2022 UK local elections, and 40 candidates at the 2024 United Kingdom general election.

Within two weeks of its announcement, the coalition declared its "full backing" for Corbyn and Zarah Sultana's Your Party initiative.