Irapuato

The club dates back to 1910 in the city of Irapuato, Guanajuato where a club was founded under the name Club Mutualista Irapuatense by Pedro Garnu and by Diego Mosqueda who was an important person in the sports development in the city, and would later go on to establish the club's rival Club León in the 1920s. In its first years many clubs were formed in order to create a futbol league in Guanajuato Deportivo Irapuato, Internacional, Club Marte, ISCO and León inaugurated the league in 1925.

The first tournament was won by Club Marte because the tournament was not finished due to problems between Irapuato and ISCO. In 1928 the club reached the final and played against Deportivo Internacional; the club's squad was made up by Kurt Lenk as keeper Antonio Aguilar and José Núñez playing defender Julián Ramírez, Francisco Belman and Salvador Silva in the mid field and Antonio "El Gato" Baltazar, Crisoforo Juárez, Secundino Alvarado, Teofilo and Juan Aguilera playing as forwards. The club came out with a 1–0 victory, winning its first league title. This club wore a white shirt with black shorts and socks.

The club that plays today under the name Club Deportivo Irapuato was founded in 1948 where it had trouble staying in the league. in the late 1940s there were various clubs that represented the city of Irapuato and it was until 1948 when they decided to merge in order to become more competitive and so they did and joined the Segunda División de México in 1949. The men in charge of the merge were Oscar Bonfiglio and Jesús Vaca Gaona both had participated in the 1928 Olympic games in Amsterdam. The club would once again change its name this time to Club Deportivo Irapuato A.C which many people believe to be the date when the club was established.

Promotion to Primera División

The club was one of the first clubs to inaugurate the Segunda División de México in the 1949–50 tournament where after 3 seasons the club won its first promotion. The club made its debut to the Primera División de México in the league on 22 August 1954 against Zacatepec who they beat 4–5. In the second round the club played at home in the Estadio Revolución stadium against Puebla who they also defeated 4–0. The club also revived its rivalry which had stopped in the late 1930s against León, that game ended in a 1–1 draw. The club's best tournament was the 1963–64 Mexican Primera División season where the club finished 4th place with 32 points; Guadalajara finished with 33 points.

Relegation

In the 1971-72 season the club found itself playing in group 2 with clubs Monterrey, Guadalajara, Puebla, Atlante, Pachuca, Pumas, Toluca and Torreón. At the end of the tournament the club finished last and had to play a relegation series against the other last place teams. The series was played against Torreón, Atlético Español, and Veracruz. the first match was played against Veracruz who defeated them 3–1 the first leg, the second leg ended in a 0–0 draw. The last game was played against Torreón in the Estadio Jalisco where Irapuato lost 1–0 and were relegated for the first time in 18 years to the Segunda División de México.

Segunda División

Back in the Segunda División the club became a top club reaching the final in its first year back against Petroleros de Ciudad Madero. The first game was played in Irapuato which they won 1–0. It seemed the club would clinch its promotion having the second match at home, but surprisingly Ciudad Madero came out with a 2–0 victory and so earning its promotion.

In the 1974–75 season, the club had its second opportunity when they once again reached the final this time playing against Tecos. The club would lose that final match 1–0. It took place in the Estadio Azteca in Mexico City.

The club would get a third opportunity to earn a promotion in 1978; this time against Zacatepec. This time a series was played. The first match ended in a 1–0 victory for Zacatepec. The second match ended in a 4–1 victory for Zacatepec and so the club would lose its third promotion series in 6 years.

Second promotion

In the 1980s the club had a streak of qualifying to the quarterfinals but not been able to reach the final. After four years the club finally reached the final in the 1984-85 tournament under the management of Diego Malta Solano against Pachuca. The first match was played in Irapuato where they took a 2–1 advantage. in the return match Irapuato came out with a win and finally earn the promotion after 13 years. Notable players from that club were Anselmo Romero, Rafael Lira, Jesús Montes, Eugenio Constantino and Teodoro Orozco.

Second relegation

In the 1990-91 season Irapuato got relegated to the Segunda División for the second time. In 1994, Irapuato joined the newly formed Primera División 'A' de México and got the opportunity to return to the Primera División.

1999–00 promotion

In the Invierno 99 season, Irapuato faced Zacatepec in the Final, they beat them 3–1 in the first leg with goals from Cristián Ariel Morales, and Martín Rodríguez in the second leg things got complicated when Zacatepec tied the game, but Morales and Rodriguez scored and they took the championship with an overall score of 5–3.