The club was founded on January 4, 1962 as Sociedade Atlética Imperatriz. The club competed in the
1987 Série B, which was the White Module of the
Copa União, being eliminated in the First Stage of the competition. Imperatriz competed in the
Série C in
1995, when they were eliminated in the Second Stage of the competition by
Intercap. The club was renamed to Sociedade Esportiva Imperatriz on February 2, 2000. and soon after that to Sociedade Impeatriz de Desportos, which is its current name. The club competed in the Série C in
2003, when they were eliminated in the Fourth Stage by
Tuna Luso. Imperatriz were eliminated in the First Stage in the
2005 Série C, but in the same year they won the
Campeonato Maranhense. They competed in the
Copa do Brasil in
2006, when they were eliminated in the first round by
Vitória. The club was eliminated in the Second Stage in the
2007 Série C Imperatriz competed again in the Copa do Brasil in
2008, when they were eliminated in the first round by
Sport. ==Honours==