Singapore public buses are operated by the SBS Transit Ltd and SMRT Corportation. With more than 300 bus services covering the whole island, bus transport is the most affordable means of transport for the masses.

There are many different bus services plying through the island. These bus routes can be grouped into the following categories.

• Trunk: Routes that ply between towns.
• Short Trip: Routes that operate short haul trips which cater to high demand sectors of the entire route.
• Feeder: Services that operate within a neighbourhood
• Intra-Town (SMRT Buses) and TownLink (SBS Transit): Routes that consist of combined feeder services to provide links between neighbourhoods within the same town, and with the bus interchange and MRT.
• Jurong Industrial Service: Routes that service the Jurong and Tuas industrial areas.
• Express: Routes that stop at several nominated stops and generally run on expressways for faster travel between several towns.
• Fast Forward: Routes providing faster travel between places where there is a high demand by calling at fewer stops.
• NightRider (SMRT Buses) and Nite Owl (SBS Transit): After-hour services on Friday, weekends and eve of public holidays.
• CityBuzz: Special bus services that loop the city.
• SMRT Link: Free shuttle services to Chinatown, Dhoby Ghaut and Little India.
• Chinatown Direct: Routes that run from towns to Chinatown via the expressway.
• Parks: Services that run from major parks to the nearest bus interchange.
• Stadium Direct: Services that run from the Singapore Indoor Stadium to major towns after major concerts or events being held there.