Johnston Pen is a place in Trelawny, Jamaica. Johnston Pen is situated nearby to the hamlet Carey Park and the village Duncans.

Type: Locality
Category: Human Settlement
Latitude: 18.46667° or 18° 28' north
Longitude: -77.55° or 77° 33' west
Elevation: 150 metres (492 feet)
Population: N/A
Parish: Trelawny Parish
County: Cornwall County
Country: Jamaica
Region: Caribbean