Mornington Meadows (Welsh: Dolydd Trefore) is a residential area of Lansbury in the town of Caerphilly, south Wales. The name comes from the pastoral land and hay meadows which once covered this area. It borders Porset Park to the south, with pastoral land to the north-east. It is within the community council of Van, Caerphilly and the electoral ward of St. James. The estate was constructed in the 1970s. All residential roads within the estate are linked into a circular internal ring road - Pen Y Cae. The estate only has one exit road for vehicles, but has a considerable number of pedestrian paths in to and out of the estate.