1C Company (Russian: Фирма «1С», [ˈfʲirmə ɐˈdʲin ˈɛs]pronunciationⓘ) is a Russian software developer, distributor and publisher based in Moscow. It develops, manufactures, licenses, supports and sells computer software, related services and video games.

In Russia, 1C is considered a leader in business software for its comprehensive business software suite 1C:Enterprise (Russian: 1С:Предприятие, 1C:Predpriyatie). 1C is known as a video game developer and publisher. Titles produced by the company include IL-2 Sturmovik, King's Bounty, Men of War and the Space Rangers series.