Sociedade Esportiva Nacional, commonly known as Nacional, is a Brazilian football club based in Santa Inês, Maranhão state.

[1] Nacional finished as runners-up in the Campeonato Maranhense Second Level in 2006.

Since 2007, the club competes in the Campeonato Maranhense.

Sociedade Esportiva Nacional play their home games at Estádio Artemas Santos, nicknamed Binezão.

[1] The stadium has a maximum capacity of 9,146 people.