Acaster Malbis is a village and civil parish in the unitary authority of the City of York, England. It is located on the River Ouse, almost 5 miles (8 km) south of York. Nearby are the villages of Copmanthorpe 2 miles (3.2 km) to the north-west, Bishopthorpe 2 miles to the north and Appleton Roebuck 3.5 miles (6 km) to the south-west. The parish covers an area of about 2,000 acres (810 ha).

The City of York, officially simply "York", is a unitary authority area with city status in the ceremonial county of North Yorkshire, England.