Tarleton is a village and civil parish in the West Lancashire district of Lancashire, England. It is situated approximately 19 miles (31 km) north-east of Liverpool and 9 miles (14 km) south-west of Preston. The parish includes the village of Mere Brow and the hamlets of Sollom and Holmes, and is an agricultural area. It had a population of 5,959 at the 2021 Census. Tarleton village, Holmes, and the villages of Hesketh Bank and Becconsall to the north form a single built-up area with a population of 8,755.

West Lancashire is a local government district with borough status in Lancashire, England. The council is based in Ormskirk, and the largest town is Skelmersdale. The district borders Fylde to the north, over the Ribble Estuary; South Ribble, Chorley, and Wigan to the east; St Helens, and Knowsley to the south; and Sefton to the south and west.