LD Alajuelense is a professional football club based in Alajuela, Costa Rica. Founded in 1919, it is one of the oldest and most successful teams in the country. The club competes in the Primera División, the top tier of Costa Rican football, and has won numerous national championships. The team's colors are red and black, and they play their home matches at the Estadio Alejandro Morera Soto. LD Alajuelense has a passionate fan base and is known for its intense rivalries, particularly with Saprissa, another prominent club in Costa Rica.