The Phnom Penh City Bus is a municipal public transport system that serves Phnom Penh, the capital of Cambodia. The system opened to the public in September 2014 with 3 lines, other lines have been gradually added over the next several years. As of 2024, 21 lines ran throughout the city. The system covers Prek Pnov (north), Ta Khmao (south), Chbar Ampov (east), and Special Economic Zone (west), there are plans to stretch the network outward.