Newmillerdam is a small village in the county of West Yorkshire, England, near Wakefield, although the name more usually refers to the area of lake and country park adjacent to the village of Newmillerdam.

Nearby lies Kettlethorpe Hall, an 18th century mansion built by the Pilkington family. It has now been converted into two separate houses. Chevet Hall, another mansion nearby built by the Pilkingtons, was bulldozed in the 1960s, in despite of massive outcry from locals.

Seckar Woods nature reserve, located nearby in the more affluent village of Woolley is an SSSI (Site of Special Scientific Interest).