Coarse

Coarse may refer to:
 * Bosnian Coarse-Haired Hound, developed by 19th century Bosnian hunters as a scent hound.
 * Coarse (behavior), vulgar behavior
 * Coarse bubble diffusers, produce 1/4 to 1/2 inch bubbles which rise rapidly from the floor of a wastewater treatment plant or sewage treatment plant tank.
 * Coarse fishing, an angling method, mostly popular throughout Europe.
 * Coarse sandpaper, a form of paper where an abrasive material has been fixed to its surface, allowing rapid removal of material by rubbing.
 * Coarse structure, on a set X is a collection of subsets of the cartesian product X × X with certain. properties which allow the large-scale structure of metric spaces and topological spaces to be defined. Used in the mathematical fields of geometry and topology.
 * Coarse woody debris (CWD), a term used for the dead trees left standing or fallen, including branches on the ground.
 * Styrian Coarse Haired Hound, a rough coated, hardy hunting dog used by Austrians and Slovenians to hunt Wild Boar.
 * Granularity
 * Coarse books, a British series of humorous books on sports and pursuits by Michael Green or Spike Hughes, e.g. The Art of Coarse Rugby
 * Coarse model, a computationally fast, auxiliary model paired with a fine model in engineering modeling and optimization by space mapping.