Marlborough Castle is a place in Portland, Jamaica. Marlborough Castle is situated nearby to the hamlets Cascade and Cedar Valley.

Type: Locality
Category: Human Settlement
Latitude: 18.1° or 18° 6' north
Longitude: -76.7° or 76° 42' west
Elevation: 795 metres (2,608 feet)
Population: N/A
Parish: Portland Parish
County: Surrey County
Country: Jamaica
Region: Caribbean