AD San Carlos is a Costa Rican soccer club based in Ciudad Quesada. Founded in 1965, the club has a rich history in Costa Rican football. They have primarily competed in the country's second division, but have had occasional stints in the top flight. The club's home venue is the Estadio Carlos Ugalde Álvarez, which has a capacity of around 5,000 spectators. AD San Carlos is affectionately known as "Los Toros del Norte" (The Bulls of the North), a nickname that reflects the club's strong presence in the northern region of Costa Rica. Despite not having won any major titles, the club has had notable performances in domestic cup competitions, showcasing their competitiveness and resilience.