The following highways are numbered 728:
| Preceded by 727 | Lists of highways 728 | Succeeded by 729 |
State Route 728 is a short east–west state highway situated in south-central Ohio. At a length of just under 2 miles (3.2 km), the state highway is a spur route that provides access to the Southern Ohio Correctional Facility. The western terminus of SR 728 is at a signalized intersection with U.S. Route 23 (US 23) in Lucasville that doubles as the eastern terminus of SR 348. Its eastern terminus is just east of the Southern Ohio Correctional Facility, at the intersection of Lucasville-Minford Road and Lang Lane (CR 180).
Louisiana Highway 101 (LA 101) is a state highway located in southwestern Louisiana. It runs 17.28 miles (27.81 km) in a general north–south direction from LA 14 in Hayes to LA 383 north of Iowa.
Kentucky Route 728 (KY 728) is an east–west state highway that traverses Edmonson and Hart Counties in south-central Kentucky.
