Real Club Celta de Vigo (Galician pronunciation: [reˈal ˈkluβ ˈθeltɐ ðɪ ˈβiɣʊ]; lit. 'Royal Celtic Club of Vigo'), commonly known as Celta de Vigo or simply Celta, is a Spanish professional football club based in Vigo, Galicia, that competes in La Liga, the top tier of Spanish football. It has more than 55 seasons in La Liga. Nicknamed Os Celestes (The Sky Blues), the club was founded on 23 August 1923 following the merger of two Vigo-based teams. The club's home stadium is Balaidos, which seats 33,950 spectators.
The club's name is derived from the Celts, a people who once lived in the region. Its main rival is fellow Galician club Deportivo La Coruna, with whom it contests the Galician derby.
Celta have never won the league title nor Copa del Rey, although they have reached the final three times in the latter. The club finished in their best-ever position of fourth in 2002–03, qualifying for the 2003–04 UEFA Champions League, where they were eliminated by Arsenal in the round of 16.