Founded in 1956, Ademar León is the handball team of the city of León. Until 1975 it played in the provincial categories when not existing economic availability to be able to promotion. In that year the team promoted to 1ª División Nacional (being player of the team the currently chairman, Juan Arias). Its 6th place in 1995–96 allowed the club to play for the first time in its history a European competition (
EHF City Cup). In 1996–97 Runner-up of
Liga ASOBAL, and runner-up of
ASOBAL Cup was able to proclaim itself, being third in the
Copa del Rey and obtaining seat to play the
EHF Champions League in the following season. In its home country, the club became champion a total of 1 time (2001) and won the
Copa del Rey once (2002), the
ASOBAL Cup twice (1999, 2009). The club won 2 international cups:
EHF Cup Winner's Cup in 1999 and 2005. ==Crest, colours, supporters==