PCO

PCO may refer to:

Organizations

 * Parliamentary Counsel Office (disambiguation)
 * Parti communiste ouvrier, the French name of the Workers' Communist Party of Canada
 * Workers' Cause Party (Partido da Causa Operária), a political party in Brazil
 * Pennsylvania College of Optometry
 * Pickleball Canada Organization, Canada's national governing body of pickleball
 * Polar Conservation Organisation
 * Privy Council Office (Canada)
 * Privy Council Office (United Kingdom)
 * Public Carriage Office, the regulatory body for the taxi and private hire trade in London
 * PCO Imaging, German developer and manufacturer of camera systems

Science

 * Posterior capsular opacification, a complication of cataract surgery
 * Principal components analysis
 * Polycystic ovaries

Professions, qualifications and types of organization

 * Pleasure Craft Operator Card or PCO Card, a proof of competency to steer a recreational or sporting boat (pleasure craft) in Canada
 * Precinct Committee Officer
 * Private cable operator
 * Professional conference organiser
 * Prospective Commanding Officer, Naval term

Other

 * Pendrell Corporation, the NASDAQ trading symbol for Pendrell Corporation (formerly ICO Global Communications)
 * Penguin Cafe Orchestra, a musical group
 * The Provisional Constitutional Order, an emergency order suspending the Constitution of Pakistan
 * Public call office, the term that a phone booth provides a local call facility in India and Pakistan
 * Punta Colorada Airstrip (ICAO code: ), a general aviation airstrip in Punta Colorada, Mexico
 * Pierre Carl Ouellet, Canadian professional wrestler