Colombo Street is a main road of the city of Christchurch, New Zealand. It runs south-north through the centre of Christchurch with a break at Cathedral Square. As with many other central Christchurch streets, it is named for a colonial Anglican bishopric, Colombo, Sri Lanka in what at the time was known as Ceylon. Parts of the street which run through Sydenham were known as Addison Street during the 1880s, and some parts were known as Colombo Road.

Cathedral Square, locally known simply as the Square, is the geographical centre and heart of Christchurch, New Zealand, where the city's Anglican cathedral, ChristChurch Cathedral is located. The square stands at the theoretical crossing of the city's two main orthogonal streets, Colombo Street and Worcester Street, though in practice both have been either blocked off or detoured around the square itself. The square was badly damaged in the February 2011 Christchurch earthquake.