Roslyn is a major residential and retail suburb of the New Zealand city of Dunedin. It is located 150 metres (490 ft) above the city centre on the ridge which runs in a crescent around the central city's western edge. It is 2.5 kilometres (1.6 mi) to the northwest of the city centre, immediately above the Town Belt. Roslyn's 2001 population was 3,957.
Roslyn is connected to the city's CBD via Stuart Street and City Road. The former of these runs below Roslyn under the Roslyn Overbridge, and is linked to the suburb via a complex interchange To the west of Roslyn, Stuart Street passes the suburbs of Kaikorai and Wakari before becoming Taieri Road, which eventually traverses Three Mile Hill to reach the Taieri Plains. City Road travels through Belleknowes before linking with Rattray Street and descending the City Rise, reaching the central city at The Exchange. Roslyn is also connected to the suburbs of Mornington to the southwest and Maori Hill to the northeast by way of Highgate, Roslyn's main road.
Roslyn is predominantly residential, though it does contain one of the city's peripheral retail areas at and around Roslyn Village on Highgate just to the southwest of the overbridge. One of the city's most notable single-sex girls' schools, Columba College, is located close to the suburb's border with Maori Hill.
The suburb and its neighbour, Wakari, between them lend their names to one of Dunedin's most prominent football teams, Roslyn-Wakari. This team's home ground is actually at Ellis Park in Kaikorai, immediately to the northwest of Roslyn. Also in Kaikorai is the building of the former Roslyn Woollen Mills, a company through whose products the name of Roslyn was widely known nationwide.
The locality of Littlebourne, considered by some a separate suburb, lies in the Town Belt on the slopes immediately below and to the southeast of Roslyn. Notable features of Littlebourne include Otago Boys' High School and its sportsground, the Littlebourne Ground, and the city's main swimming pool, Moana Pool.
One came up Stuart Street from The Octagon, turned half right at York Place into what was then called Albert Street, continued on past the end of that street through a short section of the Town Belt, past Otago Boys' High School, across the bottom of Littlebourne Crescent, and up to Highgate at School Street, then dropped down to Kaikorai just before Nairn Street, where a turntable in the road turned cars through ninety degrees and sent them south-west into their shed if it was time to go there. The route was eventually turned into a four-lane highway, cutting Littlebourne Crescent off from Littlebourne Road, going under the new bridge and undergoing considerable widening on the Kaikorai side, restricting access to Ann Street and Oates Street.
The other line went up Rattray Street then cut through the Town Belt (where the cutting is still generally visible) past the Beverly-Begg Observatory to climb the full length of Ross Street and part of Belgrave Crescent, then descend through a cutting to the valley near Frasers Road. The western section beyond the cutting was too steep for a road link, so, when the cable cars ceased, the portion near Belgrave Crescent was redeveloped as a short street serving several houses while retaining the pedestrian walkway through to Delta Street. Trolleybuses replaced the service as far as Belgrave Crescent, using the existing City Road instead of the straight steep cutting through the Town Belt.