Rosston is a town in Nevada County, Arkansas, United States. The population was 265 at the 2000 census. It is part of the Hope Micropolitan Statistical Area.
Rosston is located at 33°35′19″N 93°17′11″W / 33.58861°N 93.28639°W / 33.58861; -93.28639 (33.588495, -93.286457).
According to the United States Census Bureau, the town has a total area of 11.6 km² (4.5 mi²). 11.5 km² (4.4 mi²) of it is land and 0.1 km² (0.04 mi²) of it (0.45%) is water.