코메르시안테스 U.

Comerciantes Unidos was founded as Los Comerciantes by Abdias Cieza Tapia, Juan Tarrillo Castro, and Jorge Salas Toro in 2001. That year they were promoted to their local district league. In 2002, they became an official club and changed their name to Club Social Deportivo y Cultural Comerciantes Unidos. In 2008, they reached the Copa Perú National Stage for the first time. In 2010, they were invited to participate in La Liga Superior de Cajamarca which groups the best teams from the Cajamarca Region and gives direct access to the Department Stage of the Copa Perú. that same year they reached the National Stage of the Copa Peru once more. In 2013, they once more reached the Copa Perú National Stage and were invited to participate in the Peruvian Segunda División.

Comerciantes Unidos played its first season in the Peruvian Segunda División in the neighboring province of Santa Cruz due to their home stadium being remodeled. This was very difficult for the team and their fans. The team finished the season 14th, only 5 points away from relegation. During the 2015 season, Carlos Cortijo, who had won the Segunda División tournament the year before, was hired as the new manager by club president Aníbal Pedraza Aguilar. Comerciantes Unidos was able to once again play its home matches at their local stadium, Estadio Juan Maldonado Gamarra. The club won the tournament on 25 October 2015 after defeating Sport Boys 1–0 at a home match. Comerciantes Unidos had a great debut campaign in the 2016 Torneo Descentralizado where it finished 6th and qualified for the first time to an international tournament, the 2017 Copa Sudamericana.^[]

Comerciantes Unidos returned back to the Liga 1 in 2023, after winning the 2023 Liga 2, their second Liga 2 title.