Solway is an old-established residential suburb near the Waingawa River in the south-western part of Masterton, the principal town in the Wairarapa Valley of New Zealand's North Island. It was a small part of Manaia run on which Masterton is built. It takes its present name from Solway House built in 1877 for W. H. Donald.

Masterton is a large town in the Greater Wellington Region of New Zealand that operates as the seat of the Masterton District. It is the largest town in the Wairarapa, a region separated from Wellington by the Remutaka ranges. It stands on the Waipoua stream between the Ruamāhunga and Waingawa Rivers – 100 kilometres north-east of Wellington and 39.4 kilometres south of Eketāhuna.