Route 8 on Hong Kong Island is an express bus service operated by New World First Bus (NWFB), between Wan Chai North and Heng Fa Chuen.
Route 8 was started by China Motor Bus on 12 November 1949, between Wan Chai Ferry (then next to Stuart Road and Shau Kei Wan via King's Road and Shau Kei Wan Road, in response to the inauguration of a new ferry route between Wan Chai and Jordan Road Ferry Pier by HYF, and also with the intention of augment the then congesting Route 2. The route became the first route CMB started after the Second World War.
On 1 August 1954 CMB started a new route with no number between Shau Kei Wan and Chai Wan to serve the new bungalow development area there. At first the new route only serviced during mornings and from noon to evening, but in December service expanded to whole day long. On 1 June 1955 it merged with the main Route 8, with the terminus designated at the intersection between today's Chai Wan Road and Tai Tam Road (at that time, both roads were called Island Road). Still, the terminus was far away from development in Chai Wan, so a new route 8A was started in 1959 as a solution. 8A merged with 8 on 8 February 1961 after completion of widening works on Chai Wan Road. Consequently, the terminus was moved to the resite estates.
On 1 July 1972 the route was classified as an urban slope route, with a price higher than flat-road routes. On the same day service was further extended to Sun Ha Street, Chai Wan, to service the new Chai Wan Estate. At that time patronage on the route was high and it was usual to have a full bus. Starting from mid-1975, the route was completely serviced by double-deckers. On 22 June 1985 the eastern terminus was moved again to Chai Wan (East) Bus Terminus at Sheung On Street, and again on 1 February 1990 to Siu Sai Wan to serve the new Siu Sai Wan Estate. Partial air-conditioned service started on 27 February 1995, amongst the first batch of CMB routes to have done so.