Red Bus was a bus operator in Christchurch, New Zealand. Red Bus operated public transport bus services around Christchurch on behalf of the Canterbury Regional Council, and it operated the free inner city Shuttle on behalf of the city council until the 2011 Christchurch earthquake.

The Shuttle was a free bus service in Central Christchurch, New Zealand. Introduced in December 1998, the popular service represented the first use of turbine-electric hybrid vehicles in New Zealand. It was operated until the February 2011 Christchurch earthquake and carried about one million passengers per year. It was not reinstated after the central city cordons were removed in 2013.