Roughness

Roughness may refer to:


 * Surface roughness, the roughness of a surface
 * Roughness length, roughness as applied in meteorology
 * International Roughness Index, the roughness of a road
 * Hydraulic roughness, the roughness of land and waterway features
 * Roughness (psychophysics) in psychoacoustics refers to the level of dissonance
 * The 'roughness' of a line or surface, measured numerically by the Hausdorff dimension
 * Roughness/resel, the resel/roughness of an image/volume
 * Unnecessary roughness, a type of foul in gridiron football