Washington and Gateshead South is a constituency of the House of Commons in the UK Parliament. Created as a result of the 2023 Periodic Review of Westminster constituencies, it was first contested at the 2024 general election and is currently held by Sharon Hodgson of the Labour Party. Hodgson was MP for the predecessor seats of Washington and Sunderland West from 2010 to 2024 and Gateshead East and Washington West from 2005 to 2010.

The constituency was formed primarily from the bulk of the abolished Washington and Sunderland West constituency, with the addition of the Borough of Gateshead wards of Birtley and Lamesley from Blaydon (abolished).

The constituency is composed of the following wards (as they existed on 1 December 2020):

• The Metropolitan Borough of Gateshead wards of: Birtley; Lamesley.

• The City of Sunderland wards of: Castle; Redhill; Washington Central; Washington East; Washington North; Washington South; Washington West.

Washington & Sunderland West prior to 2024

Election		Member	Party
	2024	Sharon Hodgson	Labour

General election 2024: Washington and Gateshead South

Party		Candidate	Votes	%	±%
	Labour	Sharon Hodgson	17,682	47.8	+4.7
	Reform UK	Paul Donaghy	10,769	29.1	+15.3
	Conservative	Shaun Parsons	4,654	12.6	−21.1
	Green	Michal Chantkowski	1,687	4.6	+1.9
	Liberal Democrats	Ciaran Morrissey	1,602	4.3	−0.6
	Independent	Sharon McLafferty	627	1.7	N/A
Majority			6,913	18.7
Turnout			37,021	52.2
	Labour hold		Swing

• List of parliamentary constituencies in Tyne and Wear
• List of parliamentary constituencies in North East England (region)

• Washington and Gateshead South UK Parliament constituency (boundaries from June 2024) at MapIt UK

54°54′18″N 1°33′36″W / 54.905°N 1.56°W / 54.905; -1.56