Unified Team at the 1992 Summer Olympics
The Unified Team at the 1992 Summer Olympics (Russian: Объединенная команда на Летних Олимпийских играх 1992) in Barcelona, Spain, was a joint team consisting of twelve of the fifteen former Soviet republics that chose to compete together; the three other former states of Estonia, Latvia, and Lithuania competed separately. The team has been informally called the Commonwealth of Independent States team, though Georgia was not yet a member of the CIS when it competed as part of the Unified Team.
Source: Wikipedia — Unified Team at the 1992 Summer Olympics (CC BY-SA 4.0)