CA Osasuna is a historic Spanish football club based in Pamplona, Navarre, competing in the top-flight La Liga. The club's full name, Club Atlético Osasuna, translates to "health" or "strength" in the Basque language, reflecting its regional identity. Founded in 1920, the team plays its home matches at the iconic El Sadar Stadium, clad in their traditional red and navy blue stripes. Osasuna is renowned for its fierce loyalty to its roots, operating as a member-owned club, or *sociedad anónima deportiva*, which deepens its connection with the local community. Historically, Osasuna has been a classic yo-yo club between the first and second divisions, but its most celebrated era came in the early 2000s under coach Javier Aguirre, achieving multiple top-half finishes and a memorable run to the Copa del Rey final in 2005. The modern era sees Osasuna as a well-established and tough-to-beat La Liga side, known for a physically demanding, high-pressing style and a fortress-like atmosphere at El Sadar. Their fan base, passionate and loud, creates one of the most intimidating environments for visiting teams in Spain. Osasuna remains a proud symbol of Navarrese resilience and fighting spirit in Spanish football.