Maryland Route 655 (MD 655) is a state highway in the U.S. state of Maryland. The unsigned highway runs 1.86 miles (2.99 km) from MD 28 east and south to Carrolton Road in the Norbeck area of eastern Montgomery County. MD 655 is an L-shaped route with east–west and north–south segments that parallel MD 28 and MD 97, respectively. The highway and its form parts of service roads along MD 28 and MD 97. The route follows what were two of the original state roads constructed in the early 1910s. MD 655 was assigned to the north–south segment when MD 97 was relocated in the late 1960s. The highway was extended west when MD 28 was relocated in the early 1980s.