Unió Esportiva Cornellà, S. A. D. is a Spanish football team based in Cornellà de Llobregat, in the autonomous community of Catalonia. Founded in 1951 it plays in Segunda Federación – Group 3, holding home games at Estadi Palamós Costa Brava, which has a capacity of 3,724.
Unión Deportiva Cornellà was founded on 29 April 1951 by the merging of Club Atlético Padró and Academia Junyent. Since its foundation the club participated in regional competitions and Tercera División until the season 2013/2014, when it achieved the historic promotion to the Segunda División B.
On 6 January 2021, Cornellà upset La Liga giants Atlético Madrid by a score of 1–0 in the second round of the Copa del Rey. They were eliminated in the following round by Barcelona, as the final score was 2–0 after extra time.