JSC United Shipbuilding Corporation (USC; Russian: Объединённая судостроительная корпорация, ОСК) is an open joint stock company in Russia which unites shipbuilding, repair and maintenance subsidiaries in western and northern Russia, and in the country's Far East, to streamline civilian shipbuilding using military facilities.

USC was the owner of Arctech Helsinki Shipyard, having bought the remaining 50% of the shares from its joint venture partner STX Finland Cruise Oy.

[5] United Shipbuilding Corporation was established in 2007 by a series of Presidential Decrees signed by President Vladimir Putin.

[10][11][12][non-primary source needed] In 2017, the corporation closed its Northern and Western subsidiary branches.

[13] As a result of the Russian invasion of Ukraine, the company was sanctioned by New Zealand,[14] as well as by the United Kingdom.