Lymm is a village and civil parish located in Cheshire, North West England. It currently falls within the Borough of Warrington.
The parish incorporates several hamlets, including Booths Hill, Broomedge, Church Green, Deansgreen, Heatley, Heatley Heath, Little Heatley, Oughtrington, Reddish, Rush Green, and Statham. According to the 2021 United Kingdom census, the parish had a total population of 12,660, with the built-up area accounting for 11,545 residents.