Fredericka is a given name and may refer to:
Fredericka Douglass Sprague Perry (1872-1943), American philanthropist and activist Fredericka Mandelbaum (1818–1894), New York entrepreneur and criminal fence operator Fredericka of Saxe-Gotha-Altenburg (1715-1775), German noblewoman and member of the House of Wettin Fredericka Elisabeth of Saxe-Eisenach (1669-1730), German noblewoman and member of the House of Wettin
See also Frederica (disambiguation) Freddy and Fredericka, 2005 satiric novel by Mark Helprin