LocalLink 54 is a bus route operated by the Maryland Transit Administration in Baltimore and its suburbs.

The line currently runs from the State Center Metro Subway Station to the intersection of Harford Road and Northern Parkway.

About one half of buses continue operating along Harford Road to the Carney Park-and-Ride just north of the I-695 interchange, and the other half to the intersection of Goucher Boulevard and Taylor Avenue in Towson via Northern, McLean Boulevard, Hillsway, and Taylor.

In 1987, Route 19 was split into two lines in order to improve schedule adherence on both sides of town.

The new Route 19 ran from State Center north of downtown Baltimore, and the line served the Harford Road corridor.

[5] During the 1990s, the following changes were made to Route 19: In 2005, as part of the Greater Baltimore Bus Initiative, a comprehensive overhaul plan for the region's transit system, MTA first proposed to eliminate the Joppa Heights and Hickey School branches.

These two lines would operate on an alternating basis with coordinated schedules between Northern & Harford and downtown Baltimore.

It operated to points on Harford Road north of the Park-and-Ride lot, serving the Cub Hill area, and then followed Old Harford Road and shorter sections of other thoroughfares in Parkville and Towson not served by other bus service prior to reaching Charles Street in the Rodgers Forge area.