Maryland Route 274 (MD 274) is a state highway in the U.S. state of Maryland. Known for most of its length as Joseph Biggs Memorial Highway, the state highway runs 7.35 miles (11.83 km) from MD 273 in Rising Sun east to MD 272 in Bay View. In conjunction with MD 272, MD 274 connects Rising Sun with Interstate 95 (I-95) in central Cecil County. The state highway was built near Rising Sun in two segments, one before 1910 and the other in the mid-1920s. MD 274 was completed to Bay View in the early 1940s. The state highway has a truck bypass using MD 273 and MD 272 via Calvert.

MD 274 begins as Queen Street at an intersection with MD 273 (Main Street) in the town of Rising Sun. The state highway heads south, leaving the town limits as it curves to the southeast and becomes Joseph Biggs Memorial Highway. MD 272 passes through a mix of farmland and scattered residences while heading southeast along a ridge separating North East Creek to the northeast from Principio Creek and Stony Run to the southwest. The state highway passes through the communities of Farmington and College Green on its way to Bay View. The old alignment of MD 274, Old Farmington Road, splits to the east and MD 274 intersects the old alignment of MD 272, Old Bayview Road, before reaching its eastern terminus at MD 272 (North East Road) across from the entrance to Cecil College at Bay View, just north of MD 272's interchange with I-95 (John F. Kennedy Memorial Highway).

A section of present-day MD 274 was paved from Post Road between Farmington and College Green north to Pierce Road south of Rising Sun by 1910. The gap between that section and MD 273 in Rising Sun was filled by 1927. MD 274 remained a spur from Rising Sun to College Green until the highway to Bay View was completed in 1942. MD 274 was extended east a short distance from Old Bayview Road to its present terminus at MD 272 around 1962.

The entire route is in Cecil County.

Maryland Route 274 Truck is a 9.31-mile (14.98 km) truck bypass of MD 274. The signed route follows MD 273 from MD 274's western terminus in Rising Sun east to MD 273 in Calvert. MD 274 Truck continues south on MD 272 from Calvert to MD 274's eastern terminus at Bay View.