OCD (disambiguation)

OCD is an acronym that may stand for:

;Medical uses:
* Obsessive-compulsive disorder - a psychological term (most common usage)
* Osteochondritis dissecans - a painful joint condition in humans and animals
* Ortho-Clinical Diagnostics

;Computing:
* Object Component Desktop
* On-chip debugging
* Object collision detection

;Offices and institutions:
* Office of Community Development (multiple orgs)
* Office of Cultural Development (Louisiana)
* Ordo Carmelitarum Discalceatorum (Discalced Carmelite Order)
* Ordre des Cols Durs
* Operations and Coordination Division (NATO)
* Ocean Chemistry Division (NOAA)

;Other:
* Officer Career Development (UK)
* Oil Conservation Division
* Okanogan Conservation District
* Oldest College Daily, in reference to the Yale Daily News (although its status as the oldest is disputed)
* OpenMath Content Dictionary
* Operational Concept Description
* Oxford Classical Dictionary
* Occupational Consent Decree