Merton Park is an electoral ward in the London Borough of Merton. The ward was first used in the 1978 elections. It returns councillors to Merton London Borough Council. The ward was subject to boundary revisions in 2002 and 2022. The 2022 revision reduced the number of councillors from three to two. The ward is unusual in London because of its active residents association, the Merton Park Ward Residents Association, who have won all seats in the ward since 1990.