Citybus Route 4

4
An Alexander Dennis Enviro500 MMC on route 4 at Wah Fu (South) terminus in December 2023
Overview
OperatorCitybus
VehicleDennis Trident 3 (11XX-11XX/14XX/30XX) / Alexander Dennis Enviro500 (40XX/55XX)
Route
StartWong Chuk Hang
ViaAberdeen
Wah Fu Estate
Queen Mary Hospital
The University of Hong Kong
Sai Ying Pun
Sheung Wan
EndCentral (Exchange Square) Bus Terminus
Service
LevelDaily
FrequencyEvery 20–25 minutes (weekdays)
Every 15–20 minutes (weekends and public holidays)
Operates05:30 until 23:50

Urban Route No.4 is a bus route on Hong Kong Island operated by Citybus. It runs between Wong Chuk Hang and Central (Exchange Square) Bus Terminus, via Aberdeen, Wah Fu Estate, Pok Fu Lam Road and Sai Ying Pun.