PCS
PCS may refer to:

Military
Permanent change of station, to be permanently moved to a new post in the U.S. armed forces
Personal Clothing System, designation of British Army No. 8 Combat Dress
Patrol Craft Sweeper, a class of World War II U.S. Navy vessels, including:
USS PCS-1376, the lead ship of her class
USS PCS-1379, the fourth of twelve

Organizations
Communist Party of El Salvador (Spanish: Partido Comunista de El Salvador), a political party in El Salvador
PhillyCarShare, a defunct non-profit organization in Philadelphia, US, acquired by Enterprise in 2011
Polish Council of State, supreme political body of Poland from 1947 to 1989
Portland Center Stage, a theater company based in Portland, Oregon, US since 1988
Potash Corporation of Saskatchewan, a former Canadian producer of potash
Provincial Civil Service, Uttar Pradesh, India
Provo Canyon School, a US psychiatric youth residential treatment center
Public and Commercial Services Union, a trade union representing UK public sector workers
Sammarinese Communist Party (Italian: Partito Comunista Sammarinese), a former political party in San Marino

Education
Pacific Collegiate School, a grades 7–12 charter school in Santa Cruz, California, US
Petaluma City Schools, the school district of Petaluma, California, US
Presbyterian Christian School, a private school in Hattiesburg, Mississippi, US
Professional Children's School, a college preparatory school for child actors and dancers in New York City, US
Pueblo City Schools, the school district of Pueblo, Colorado, US

Science and technology
Partitioning Communication System, a high-assurance communications security technology
Periphere Computer Systeme, a German manufacturer of UNIX-based computers in the 1980s and 1990s
Personal Communications Service, a set of wireless communications capabilities
Photon correlation spectroscopy, a spectroscopic technique in chemistry and physics used to determine particle sizes in suspensions
Physical coding sublayer, an Ethernet Layer 1 (PHY) sub-layer
Picture communication symbols, drawings used to communicate with autistic people and in other alternative communication systems
Plastic-clad silica fiber, a type of optical fiber
Process control system, for industrial process control
Profile connection space, an intermediary form for color-data used when performing conversions between color spaces

Medicine
Pelvic congestion syndrome, a cause of chronic pain in the abdomen
Post-concussion syndrome, a set of symptoms that a person may experience after a concussion
Post-COVID syndrome, symptoms that develop and continue for a long time after COVID-19
Postcholecystectomy syndrome, the presence of abdominal symptoms after surgery to remove the gallbladder
Precordial catch syndrome, a common cause of chest pain complaints in children and adolescents

Other uses
Pacific Central Station, a railway station in Vancouver, British Columbia, Canada
Pacific Championship Series, a professional esports league for the MOBA PC game League of Legends
Photo City Sagamihara, awards for photography given annually by the Japanese town of Sagamihara
Pinball Construction Set, a computer game by Bill Budge published by Electronic Arts
Program Component Score, part of the ISU Judging System for figure skating competitions
Prime Cabinet Secretary of the Republic of Kenya

See also
Parsec (pc), a unit of distance used in astronomy
Personal computer (PCs)
PC (disambiguation)