The following is a list and description of the local, express and commuter bus routes of the Maryland Transit Administration, which serve Baltimore and the surrounding suburban areas as of June 2017 following the Baltimore Link Launch. In, the system had a ridership of , or about per weekday as of. Routes marked with an asterisk (*) run at all times (24/7/365).

CityLink

Express BusLink

Former Express BusLink Routes

LocalLink

The following is a list and description of the local, express and commuter bus routes of the Maryland Transit Administration, which serve Baltimore and the surrounding suburban areas. Note: (Crosstown) = Bus service that is traveling across the city of Baltimore without going through the downtown area.

Intercounty Connector Bus routes

Commuter bus routes

Former bus routes