New Plymouth is the major city of the Taranaki Region on the west coast of the North Island of New Zealand. It is named after Plymouth, Devon, England, from where the first English settlers migrated.

New Plymouth District includes New Plymouth City and several smaller towns. New Plymouth District is the 15th largest district (out of 73) in New Zealand, and has 1.7 percent of New Zealand's population.

New Plymouth District has a population of 68,901 – nearly two thirds of the total population of the Taranaki Region. This includes – New Plymouth City (52,500), Waitara (6,288), Inglewood (3,090), Oakura (1,359), Okato (531) and Urenui (429).

The city is a service centre for the region's principal economic activities including intensive pastoral activities (mainly dairy farming) as well as oil, natural gas and petrochemical exploration and production. It is also the region's financial centre as the home of the TSB Bank (formerly the Taranaki Savings Bank), the largest of the remaining non-government New Zealand-owned banks.

Plymouth ⁱ/ˈplɪməθ/ is a city and unitary authority area on the south coast of Devon, England, about 190 miles (310 km) south-west of London. It is situated between the mouths of the rivers Plym to the east and Tamar to the west, where they join Plymouth Sound. Since 1967, the City of Plymouth has included the suburbs of Plympton and Plymstock, which are on the east side of the River Plym.

Plymouth's history goes back to the Bronze Age, when its first settlement grew at Mount Batten. This settlement continued to grow as a trading post for the Roman Empire, until the more prosperous village of Sutton, the current Plymouth, surpassed it. In 1620, the Pilgrim Fathers left Plymouth for the New World and established Plymouth Colony – the second English settlement in what is now the United States of America. During the English Civil War the town was held by the Parliamentarians and was besieged between 1642 and 1646.

Throughout the Industrial Revolution, Plymouth grew as a major commercial shipping port, handling imports and passengers from the Americas, while the neighbouring town of Devonport grew as an important Royal Naval shipbuilding and dockyard town. In 1914 the three neighbouring and independent towns, viz., the county borough of Plymouth, the county borough of Devonport, and the urban district of East Stonehouse were merged to form a single County Borough. The new, merged town took the name of Plymouth which, in 1928, achieved city status. The city's naval importance later led to its targeting and partial destruction during World War II, an act known as the Plymouth Blitz. After the war the city centre was completely rebuilt.