ARC (language), a group of Semitic languages with a 3,000-year history

American Red Cross, a humanitarian organization that provides emergency assistance, disaster relief and education inside the United States

Administrative Reform Council, the military regime that governed Thailand following the 2006 coup d'état ousting Prime Minister Thaksin Shinawatra

ARC (station), Amtrak's station in Arcata, California

Advanced Recon Commando, part of the elite special forces of clone troopers under the Grand Army of the Republic in the fictional Star Wars universe

NASA Ames Research Center, a NASA facility located at Moffett Federal Airfield

Australian Rugby Championship, a former Australian national rugby competition

Attack Retrieve Capture, a free multiplayer, 2D computer game originally created by John Vechey and Brian Fiete as a college project

Australian Rally Championship, a 6 Round National motorsport Championship run in forested countryside throughout Australia

Auckland Regional Council, a local government entity of the Auckland Region of New Zealand

Andromeda Research Corporation, a fictional corporation in the computer game Uplink

ARC/Architectural Resources Cambridge, Inc., an architectural design firm located in Cambridge, Massachusetts.

Advanced Resource Connector, a middleware for computational grids.

ARC (file format), a file format by SEA that was very popular before Phil Katz's introduction of the ZIP format

Appalachian Regional Commission, a United States federal-state partnership that works with the people of Appalachia to create opportunities for self-sustaining economic development and improved quality of life

Aviation Research Centre, a part of the Research and Analysis Wing of the Cabinet Secretariat

Adaptive Replacement Cache, a cache management algorithm with better performance than LRU

Athletics-Recreation Center, a 5,000-seat multi-purpose arena in Valparaiso, Indiana

Art Renewal Center, an organization dedicated to classical realism in art

Aging Research Centre, an independent non-profit educational research centre with facilities in Berkeley, California and in Waterloo, Ontario, Canada

ARC International, a computer processor designer

Atlanta Regional Commission, a regional planning and intergovernmental coordination agency

Automation and Remote Control, a Russian periodical

The Australian Research Council, the Australian Government's main research funding body for tertiary institions

Advanced RISC Computing, a specification promulgated by a defunct consortium of computer manufacturers

American River College, a community college in Sacramento County, California

American Record Company, a United States record label

American Reprographics Company, the largest reprographics company in the United States

Advance Reader Copy, a book is released by the book publisher before it has gone to press

Aspect Ratio Converter, a hardware device which changes the Aspect Ratio of a Video Signal

Society for the Arts, Religion and Contemporary Culture, a religious organization

Augmentation Research Center, a center founded by electrical engineer Douglas Engelbart to develop and experiment with new tools and techniques for collaboration and information processing

ARC Macro Language, a high-level algorithmic language for ArcInfo

A.R.C. is an album by Circle (jazz band)

Amalgamated Roadstone Corporation, a British stone quarrying company

Atlantic Rally for Cruisers, a transatlantic sailing competition

AIDS-related complex, a condition in which antibody tests are positive for the HIV virus

ARC (Callsign), the acronym used by the Colombian National Armada ships

Arthritis Research Campaign, a British medical research charity dedicated to curing arthritis

Alberta Research Council, an Alberta government funded applied research and development (R&D) corporation.

Alberta Research Council, an Alberta government funded applied research and development (R&D) corporation.