Clube Elvense de Natação (CEN) is a sports association based in Elvas, Portugal, founded in 1954. The club provides sports and learning opportunities for people of different ages, with swimming at the heart of its activities. Its swimming lessons run throughout the year, Monday to Friday, with schedules designed for different age groups. Programs include introducing young children to the aquatic environment, junior classes, and senior lessons. The club also offers athletics, a section it has recently revamped to support athletes in pursuing their goals, and lists nutrition among its services.

CEN emphasizes teaching and coaching across its activities, with technicians and staff supporting both participants and athletes. Membership and family pricing is available for some classes, while non-member rates may differ; senior-class pricing is set by consultation. The club also sells branded clothing, including polos, sweatshirts, and T-shirts. Based at Avenida D. Sancho Manuel in Elvas, CEN shares news about competitions, events, and celebrations, and invites the local community to join its sporting programs.