The following highways are numbered 63A:
New York State Route 70 (NY 70) is a short state highway in the western portion of New York in the United States. It travels through three different counties in just 18.01 miles (28.98 km) and is the primary road to and from the village of Canaseraga. The western terminus of the route is at an intersection with NY 436 in the Livingston County town of Portage. Its eastern terminus is at a junction with NY 36 in the Steuben County town of Dansville. Although NY 70 is mostly signed north–south, it follows a more southeast–northwest alignment and is considered an east–west route by the New York State Department of Transportation (NYSDOT). The portion of the route between Dalton and Canaseraga parallels both Canaseraga Creek and the Norfolk Southern Railway's Southern Tier Line.
New York State Route 408 (NY 408) is a 15.95-mile-long (25.67 km) state highway located entirely within Livingston County, New York, in the United States. It runs north–south from an intersection with NY 70 near the hamlet of Dalton in the town of Nunda to a junction with NY 63 in the town of Groveland near NY 408's exit with Interstate 390 (I-390). Most of NY 408 is a two-lane rural highway that passes through lightly developed areas; however, the last two miles (3 km) of the highway, where it runs in a due east–west direction, are heavily trafficked as NY 408 becomes a key connector road in both directions.
State Highway 63 is a 96.7 mile (155.6 km) state highway in southeastern Oklahoma. It runs from U.S. Highway 69 in Kiowa to the Arkansas state line. SH-1 forms a concurrency with SH-63 for 37.8 miles (60.8 km), nearly 40 percent of the highway's length. SH-63 has one spur route, designated as SH-63A.
Utah State Route 63 is a state highway in southeastern Garfield County, Utah, United States, that connects Bryce Canyon National Park with Utah State Route 12 at Tropc Junction.