White Waltham is a village and civil parish, 2 miles (3 km) west of Maidenhead, in the Royal Borough of Windsor and Maidenhead in Berkshire, England. It is crossed briefly by the M4 motorway, which along with the Great Western Main Line and all other roads covers 0.267 square kilometres (0.103 sq mi) of the parish and 'greenspace' which includes cultivated fields covers the most part - this covered (in January 2005) 9.421 square kilometres (3.637 sq mi). White Waltham Airfield is in the parish.