PCO may refer to:
Business
- PCO Imaging, German developer and manufacturer of camera systems
- Pendrell Corporation, the NASDAQ trading symbol for Pendrell Corporation (formerly ICO Global Communications)
Government
- Parliamentary Counsel Office (disambiguation)
- Presidential Communication Office of Indonesia
- Presidential Communications Office of the Philippines
- Privy Council Office (Canada)
- Privy Council Office (United Kingdom)
- Public Carriage Office, the regulatory body for the taxi and private hire trade in London
Politics
- , the French translation of the Workers' Communist Party of Canada
- , the Portuguese name of the Workers' Cause Party
- Workers' Cause Party (), a political party in Brazil
Science
- Posterior capsular opacification, a complication of cataract surgery
- Polycystic ovaries
- Phosphaethynolate, an anion with the chemical formula
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, in the U.S. Navy
Sport
- Pickleball Canada Organization, Canada's governing body for the sport of pickleball
- Pierre Carl Ouellet, Canadian professional wrestler
Other
- Pennsylvania College of Optometry
- Penguin Cafe Orchestra, a musical group
- The Provisional Constitutional Order, an emergency order suspending the Constitution of Pakistan
- Public Call Office, a local call facility with multiple telephone booths
- Punta Colorada Airstrip (ICAO code: <code>PCO</code>), a general aviation airstrip in Punta Colorada, Mexico
See also
- PCOS (disambiguation)