The Liverpool City Region Combined Authority (LCRCA), officially the Halton, Knowsley, Liverpool, St Helens, Sefton and Wirral Combined Authority, is the combined authority of the Liverpool City Region in England. Its area includes the City of Liverpool local authority area, the Metropolitan Boroughs of Knowsley, St Helens, Sefton, and Wirral, and the Borough of Halton. It was established on 1 April 2014 by statutory instrument under the provisions of the Local Democracy, Economic Development and Construction Act 2009. Composition of the combined authority is made up of the leaders of the six principal membership authorities, plus several non-voting members with various vested interests in the activities of the combined authority.

Liverpool City Region is a combined authority area in North West England. It has six council areas; five Merseyside metropolitan boroughs and the Cheshire unitary authority of Halton. The region had a population of 1,571,045 in 2022.