Cobham Park is a former mansion and country estate in Cobham, Surrey, England. The main house was converted to apartments in the early 2000s, but the majority of the surrounding former parkland remains undeveloped. At its height in the 19th century, the estate included the majority of the neighbouring settlement of dowside Downside.
The first records of the land are from the 15th century and it is referred to as "Dounefelde" in a charter of Chertsey Abbey dated 1468. The first large house to be built at Cobham Park was constructed in the 1720s. The current building dates from the early 1870s and was designed by Edward Middleton Barry.