The 2021 Durham County Council election was held on 6 May 2021 as part of the 2021 local elections in the United Kingdom. All 126 councillors were to be elected. The county is divided into 63 electoral divisions (called "wards") with each electing between 1 and 3 councillors by the first-past-the-post voting method for a fixed four-year term. The result saw the Labour Party retain its position as the largest party but lose control of the council. It marked the first time since 1919 that the council (and its predecessors) had not been controlled by Labour.