Greta Valley is a town in North Canterbury, 83 km north of Christchurch, New Zealand. It was named after the River Greta in Yorkshire by local runholders Sir Charles Clifford and Sir Frederick Weld in the 1850s, but it is to the east of the Greta River and on the south bank of the Waikari River. It is situated approximately halfway between Christchurch and Cheviot just off State Highway 1.