Hard

Hard may refer to
 * Hardness, resistance of physical materials to deformation or fracture
 * Hard water, water with high mineral content

Arts and entertainment

 * Hard (TV series), a French TV series
 * Hard (band), a Hungarian hard rock supergroup
 * Hard (music festival), in the U.S.
 * Hard (EP), Goodbye Mr Mackenzie, 1993
 * Hard (Brainpower album), 2008
 * Hard (Gang of Four album), 1983
 * Hard (Jagged Edge album), 2003
 * Hard (Shinee album), 2023
 * "Hard" (song), a 2009 song by Rihanna
 * "Hard", a song by Royce da 5'9" from the 2016 album Layers
 * "Hard", a song by Why Don't We from the 2018 album 8 Letters
 * Hard, a 2017 EP from the band The Neighbourhood
 * "Hard", a song by Sophie from the 2015 compilation album Product

Places

 * Hard, Austria
 * Hard (Zürich), Switzerland

Other uses

 * Hard (surname)
 * Hard architecture, impersonal windowless buildings with graffiti-resistant walls usually associated with prisons and other secure structures
 * Nickname of Masaki Sumitani ( HardGay / HardoGay )
 * Hard (nautical), a beach or slope convenient for hauling out vessels
 * hard, slang for an erection
 * Hard (gamer), Anthony Barkhovtsev
 * Hayward Area Recreation and Park District, California, U.S.
 * Hard, consonants that are not palatalized