Club Deportivo Santa Úrsula was a Spanish football team based in Santa Ursula, in the autonomous community of the Canary Islands. Founded in 1975 it last played in Tercera Federación – Group 12, and held home games at Estadio Argelio Tabares, with a capacity of 2,000 seats.
In the 2016-17 season the club finished 16th in the Tercera División, Group 12. On 10 July 2025, the club merged into the structure of Real Unión de Tenerife, with Real Unión taking their place in Tercera Federación.