| State: | MD |
| Type: | MD |
| Route: | 270 |
| Alternate Name: | Furnace Branch Road |
| Map Custom: | yes |
| Map Notes: | Maryland Route 270 highlighted in red |
| Length Mi: | 2.16 |
| Length Round: | 2 |
| Established: | 1932 |
| Direction A: | South |
| Terminus A: | in Glen Burnie |
| Junction: |
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| Direction B: | North |
| Terminus B: | in Glen Burnie |
| Counties: | Anne Arundel |
| Previous Type: | I |
| Previous Route: | 270 |
| Next Type: | MD |
| Next Route: | 272 |
Maryland Route 270 (MD 270) is a state highway in the U.S. state of Maryland. Known as Furnace Branch Road, the highway runs 2.16miles from MD 648 north to MD 3 Business within Glen Burnie in northeastern Anne Arundel County. MD 270 was constructed between a pair of intersections with MD 2 in the early 1930s. The highway was expanded and relocated when MD 10 was constructed through the area in the mid-1970s.
MD 270 begins at an intersection with MD 648 (Baltimore - Annapolis Boulevard) between MD 648's interchange with MD 10 (Arundel Expressway) and Marley Creek east of the center of Glen Burnie. The highway heads north as a two-lane undivided road that parallels the northbound side of MD 10 through the Margate neighborhood of Glen Burnie. North of Thompson Avenue, MD 270 expands to a four-lane divided highway. The highway curves northwest as it passes through its partial cloverleaf interchange with MD 10. MD 270 becomes a four-lane road with a center left-turn lane ahead of its intersection with MD 2 (Governor Ritchie Highway). The highway reaches its northern terminus at MD 3 Business (Robert Crain Highway) one block west of MD 2, just south of Furnace Branch.
MD 270 was constructed as a concrete road from MD 2 (now MD 648) east of Glen Burnie to MD 2 (now MD 3 Business) north of Glen Burnie in two sections: from the northern terminus south to Point Pleasant Road in 1931 and 1932, and from there to the southern terminus in 1932 and 1933. MD 10's interchanges with MD 270 and MD 648 were completed in 1977. As part of the construction of MD 10, MD 270 was expanded to a divided highway from MD 2 to Thompson Avenue and its southern terminus was relocated further east along MD 648.