The 2004–05 Celta de Vigo season was the club's 81st season in its history and its 27th participating in the Segunda División, the second tier of Spanish football. Heading into the 2004–05 season, the Célticos were looking to return to La Liga after being relegated in the previous season. On the 18 June 2005, the Célticos gained promotion back to La Liga following a 2–0 victory over UE Lleida. Celta narrowly missed out on claiming the Segunda División title on goal difference to Cádiz CF.