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 2023, the system had a ridership of 49,376,400, or about 164,000 per weekday as of the third quarter of 2024.

Routes marked with an asterisk (*) run at all times (24/7/365).

Note: (Crosstown) = Bus service that is traveling across the city of Baltimore without going through the downtown area.

The following is a listing of all services operating under the MTA's Commuter BUSLink network, including services operating to Baltimore and Washington, D.C.