The Thames Valley is a non-administrative region in the North Island of New Zealand.
The lower part of the valley is more commonly known as the Hauraki Plains.
[2] For local government administration, the Thames Valley is fully contained within the Waikato region, and is split between the Thames-Coromandel, Hauraki and Matamata-Piako Districts.
The main towns are Thames, Paeroa, Ngatea and Te Aroha.
While geographically the towns of Morrinsville and Matamata are also located within the Thames Valley, they are not typically treated as such, and their rugby clubs are affiliated with the Waikato provincial union.