Middlesbrough and Thornaby East is a constituency of the House of Commons in the UK Parliament. Further to the completion of the 2023 Periodic Review of Westminster constituencies, it was first contested in the 2024 general election and is currently held by Andy McDonald of the Labour Party, who previously held the abolished constituency of Middlesbrough from 2012 to 2024.
The composition of the constituency is as follows (as they existed on 1 December 2020):
The seat is the successor to the Middlesbrough constituency, subject to alignment of the boundaries to take account of a revised local authority ward structure. In order for the electorate to be within the permitted range, the two Stockton-on-Tees wards, comprising the eastern part of the town of Thornaby-on-Tees, were transferred from Stockton South (abolished).
Middlesbrough prior to 2024