Frederica

Frederica or Fredrica may refer to:
 * Frederica (given name), including a list of notable people who bear the name
 * Frederica (novel), a romance novel by Georgette Heyer
 * Frederica, Delaware, United States
 * Frederica Academy, an American school
 * Fort Frederica, a historic American fort
 * Frederica naval action, a small naval battle during the American Revolutionary War
 * Frederica Bernkastel, a character in the Japanese sound novel Higurashi no Naku Koro ni
 * Princess Frederica (disambiguation), including princesses named Frederika and Friederike
 * Frederica (1932 film), a German historical musical drama film
 * Frederica (1942 film), a French comedy film