The following highways are numbered 56A:
New York State Route 310 (NY 310) is a 21.43-mile-long (34.49 km) north–south state highway located entirely within St. Lawrence County in the North Country of the U.S. state of New York. The southern terminus is at U.S. Route 11 (US 11) and NY 68 in the town of Canton, just east of the village of Canton. The northern terminus is at NY 56 in the community of Raymondville in the town of Norfolk.
New York State Route 345 (NY 345) is a state highway located entirely within St. Lawrence County in the North Country of New York in the United States. It is a north–south route connecting the towns of Waddington and Potsdam by way of the town of Madrid. The southern terminus of NY 345 is at an intersection with U.S. Route 11 (US 11) in the village of Potsdam. Its northern terminus is at a junction with NY 37 in the village of Waddington by the St. Lawrence River.
National Highway 56A or NH 56A starts at Chenhat and ends at km 16 of NH 56 in Uttar Pradesh, India. The total length of the highway is 13 km and runs only in the state of Uttar Pradesh.
