Maryland Route 267 (MD 267) is a state highway in the U.S. state of Maryland. The state highway runs 1.90 miles (3.06 km) through Charlestown between two intersections with MD 7 in southwestern Cecil County. MD 267, which follows the path of the old post road between Baltimore and Philadelphia, was constructed as a modern highway in 1915 and bypassed by what is now MD 7 in 1921.

MD 267 begins at an intersection with MD 7 (Philadelphia Road) west of Charlestown. The state highway heads east as two-lane Baltimore Street, crossing over the Amtrak Northeast Corridor and passing through a forested area into the town of Charlestown. After passing Carpenters Point Road, MD 267 enters the Charlestown Historic District. After passing Charlestown Elementary School, the state highway turns north onto Cecil Street and crosses Red Rum Run. The state highway becomes Market Street after making a right-angle turn to the east, then turns north again onto Bladen Street. After leaving the historic district and the town limits, MD 267 crosses over the railroad tracks again and reaches its eastern terminus at MD 7 east of Charlestown.

MD 267 traces the path of the Old Post Road between Baltimore and Philadelphia of the 18th century, during which Charlestown was the county seat of Cecil County. Under the purview of the recently-formed Maryland State Roads Commission, the Charlestown portion of the Perryville–North East section of the old post road was upgraded to an all-weather highway in 1915. In 1921, to eliminate two crossings of the Pennsylvania Railroad (now Amtrak) on the Perryville–North East highway, Charlestown was bypassed by what was to become U.S. Route 40 and later MD 7.

The entire route is in Charlestown, Cecil County.