Frank Michael Fernández, Jr. (April 17, 1918 – June 18, 2001) was an American historian, educator, and notable Isleño advocate in St. Bernard Parish, Louisiana. Through his advocacy and exposure in the community, he attracted academics like Samuel G. Armistead, among others, to study the Isleños of St. Bernard Parish. His tenure as a public educator was marked by his fight for a Spanish language program as a means to preserve the Isleño Spanish dialect. Ultimately, his work to preserve the Canary Islander descendants community led to the formation of Los Isleños Heritage and Cultural Society of St. Bernard.