Maryland Route 450 (MD 450) is a state highway in the U.S. state of Maryland. The state highway runs 30.19 miles (48.59 km) from U.S. Route 1 Alternate (US 1 Alternate) in Bladensburg east to US 50, US 301, and MD 2 near Arnold. MD 450 forms a local complement to US 50 from near Washington through Annapolis. In Prince George's County, the highway is a four- to six-lane divided highway that serves Bladensburg, Landover Hills, New Carrollton, Lanham, and Bowie. In Anne Arundel County, MD 450 connects Crofton with Parole and Annapolis with the portion of the county east of the Severn River. The highway serves as one of the main streets of Annapolis, including the state capital's historic core, and is the primary access to the U.S. Naval Academy.