The Christchurch City Council is the local government authority for Christchurch in New Zealand. It is a territorial authority elected to represent the 396,200 people of Christchurch. Since October 2022, the Mayor of Christchurch is Phil Mauger, who succeeded after the retirement of Lianne Dalziel. The council currently consists of 16 councillors elected from sixteen wards, and is presided over by the mayor, who is elected at large. The number of elected members and ward boundaries changed prior during the 2016 election.

Christchurch is the largest city in the South Island and the second-largest city by urban area population in New Zealand, after Auckland. Christchurch lies in the Canterbury Region, near the centre of the east coast of the South Island, east of the Canterbury Plains. It is located near the southern end of Pegasus Bay, and is bounded to the east by the Pacific Ocean and to the south by Banks Peninsula. The Avon River / Ōtākaro flows through the centre of the city, with a large urban park along its banks. Christchurch has a reputation for being an 'English' city, with its architectural identity and common nickname the "Garden City" due to similarities with garden cities in England.