Mayfield Park is a recreational area straddling Woolston and Weston in Southampton, England. The stream that runs through the park is the boundary between the two districts of modern Southampton. The park is owned and maintained by Southampton City Council. It was previously part of the Chamberlayne family's Weston Grove estate. Much of the rest of the Weston Grove estate has been used to develop the post-war suburb of Weston. Mayfield Park survives because it was split from the Weston Grove estate in the nineteenth century, becoming the Mayfield Estate.