Star City is an area in Zvyozdny gorodok, Moscow Oblast, Russia, which has since the 1960s been home to the Yuri Gagarin Cosmonaut Training Center (GCTC). Officially, the area was known as "closed military townlet No. 1" and at various times had also been designated as Shchyolkovo-14 (Щёлково-14) and Zvyozdny (Звёздный).

The Yuri A. Gagarin State Scientific Research-and-Testing Cosmonaut Training Center is a Russian training facility responsible for training cosmonauts for their space missions. It is in Star City of Moscow Oblast, a name which may refer to the facility itself or to its grounds.