Celta Vigo

RC Celta de Vigo was formed as a result of the ambition of Vigo's teams to achieve more at national level, where the Basque sides had been their bête noire in the Spanish Championship. The idea was to merge both Vigo-based teams, Real Vigo Sporting and Real Club Fortuna de Vigo, to create a more powerful team at national level. The standard-bearer of this movement was Manuel de Castro, known as "Handicap", a sports writer for the Faro de Vigo who, from 1915, began to write in his articles about the need for a unitarian movement. The slogan of his movement was "Todo por y para Vigo" ("All by and for Vigo"), which eventually found support among the managers of both clubs. It was backed unanimously when De Castro himself presented the motion at the assembly of the Royal Spanish Football Federation in Madrid on 22 June 1923.

On 12 July 1923, the merger was approved at the annual general meetings of Vigo and Fortuna, held at the Cine Odeón and Hotel Moderno, respectively. At the last general meeting of Fortuna and Vigo, which approved the formation of the new club and was held on 10 August, the members decided on the name and colours of the team. Among the various names proposed were Club Galicia, Real Atlético FC, Real Club Olímpico, Breogán and Real Club Celta. The latter two names were the most liked and in the end they decided on Club Celta, an ethnic race linked to Galicia. The first president of Celta was Manuel Bárcena de Andrés, the Count of Torre Cedeira. This assembly also decided on the squad, which totaled 64 players and included some important players from Fortuna and Vigo, and was managed by Francis Cuggy. Their first match was a friendly against Portuguese side Boavista, which Celta won 8–2.

In January 1927, Celta won the 'Copa del Rey Alfonso XIII' trophy after defeating the English sailors team 4–1.

In 1947–48, Celta ranked fourth, the club's joint highest ever finish, and reached the Copa del Generalísimo final, where they lost 4–1 to Sevilla FC. Local striker Pahiño, who took the Pichichi Trophy for 21 goals in 22 games that season, subsequently moved to Real Madrid.

In the late 1990s and early 2000s, Celta were dubbed "EuroCelta" by the Spanish press as a result of their European performance. This included a 4–1 aggregate win against Liverpool in a run to the quarter-finals of the 1998–99 UEFA Cup. In the next season's edition they again reached the last eight, with a 4–0 second leg win over Juventus and a 7–0 home win against Benfica (8–1 on aggregate). Domestically, the team reached the 2001 Copa del Rey final, losing 3–1 to Real Zaragoza in Seville.

Key players during the period included Alexander Mostovoi, Valery Karpin and Haim Revivo, though the squad also relied upon other international players as well, such as goalkeeper Pablo Cavallero; defender and future coach Eduardo Berizzo, midfielders Claude Makélélé and Mazinho; winger Gustavo López; and strikers Catanha and Lyuboslav Penev, amongst others.

In 2002–03, under manager Miguel Ángel Lotina, Celta ranked fourth, their highest finish since 1948, and qualified for the 2003–04 UEFA Champions League. They reached the round of 16, where they were eliminated by Arsenal 5–2 on aggregate. Domestically that year, the team came 19th and suffered relegation to the Segunda División. Although the squad was heavily dismantled following the demotion, Celta earned an immediate return to the top flight after finishing second in 2004–05.

In 2006–07, Celta finished 18th and were once again relegated to the Segunda División. The team subsequently fought against relegation to the third tier, and the risk of bankruptcy. This trend was bucked in the 2010–11 season, when new striker David Rodríguez, winger Enrique de Lucas and manager Paco Herrera helped them finish sixth. They were eliminated in the first knockout round by Granada after a penalty shoot-out, the game having finished 1–1 in 90 minutes.

On 3 June 2012, Celta returned to La Liga after a five-year absence. In their first season after returning to the top flight, they avoided relegation to the Segunda División on the final day after beating RCD Espanyol 1–0 to ensure a 17th-place finish.

Under "EuroCelta" veteran Eduardo Berizzo in 2015–16, Celta finished sixth for their best result in a decade and earned a spot in the 2016–17 UEFA Europa League. In their return to European competitions, Celta reached the semi-finals of the 2016–17 UEFA Europa League, where they were eliminated by eventual champions Manchester United.