The Spanish water polo championship has been contested since 1912. The current league format was introduced in 1965. The top division is currently known as the División de Honor and consists of twelve clubs. The current champions (2024–25 season) are CN Atlètic-Barceloneta from Barcelona.

The Spain Division de Honor is the premier water polo league in Spain, showcasing the nation's top teams and most talented athletes. Established as the highest level of competitive water polo in the country, the Division de Honor features a dynamic and highly competitive season where clubs vie for national supremacy. Known for its intense matches, skilled players, and passionate fan base, the tournament highlights Spain's rich water polo tradition and its status as a prominent force in European water polo. Throughout the season, teams compete in a series of matches culminating in playoffs and a championship final, determining the national champion and qualification for continental competitions. The Division de Honor is a showcase of top-tier water polo excellence, fostering local talent and contributing to the sport's growth across Spain.