OCD, or obsessive–compulsive disorder, is a mental disorder involving obsessions and compulsions.

OCD may also refer to:

Medical uses

  • Obsessive–compulsive personality disorder (OCPD), a mental disorder that is often mistakenly called OCD
  • On-call duty, a long shift that may be assigned to medical residents
  • Ortho-Clinical Diagnostics, an American company
  • Osteochondritis dissecans, a painful joint condition in humans and other animals

Computing

  • OCD, the file suffix used by OCAD mapping software
  • Object collision detection
  • On-chip debugging
  • OpenOCD (Open On-Chip Debugger), a debugger mostly used in embedded software development.

Offices and institutions

  • Office of Civil Defense, the National Emergency Management Agency of the Philippines
  • Office of Civilian Defense, a World War II–era U.S. government agency
  • Office of Community Development, a part of the U.S. Department of Agriculture's rural development activities
  • Office of Cultural Development, a part of the Louisiana Department of Culture, Recreation and Tourism

Christianity

  • OCD, the acronym for the Order of Discalced Carmelites (from the Latin, Ordo Carmelitarum Discalceatorum)

Other

  • "O.C.D.", a song by Suicide Silence from their third album The Black Crown
  • Obsessive Completion Distinction, an achievement demanding extraordinary attention to detail in the video game World of Goo
  • Octavian County Day School, a school attended by characters of Lisi Harrison's The Clique books
  • OCD overdrive pedal by Fulltone
  • "OCD", a song by Fitz and the Tantrums from All the Feels, 2019
  • "OCD", a song by Logic featuring Dwn2Earth
  • "OCD", a song by the Godfathers from Alpha Beta Gamma Delta, 2022
  • A 1999 cassette album by the noise musician Prurient
  • Offshore Development Center
  • Okanogan Conservation District
  • Oxford Classical Dictionary