El Salvador
noun: Salvadoran(s)
adjective: Salvadoran

Equatorial Guinea
noun: Equatorial Guinean(s) or Equatoguinean(s)
adjective: Equatorial Guinean or Equatoguinean

Eritrea
noun: Eritrean(s)
adjective: Eritrean

Estonia
noun: Estonian(s)
adjective: Estonian

Ethiopia
noun: Ethiopian(s)
adjective: Ethiopian

Falkland Islands (Islas Malvinas)
noun: Falkland Islander(s)
adjective: Falkland Island

Faroe Islands
noun: Faroese (singular and plural)
adjective: Faroese

Fiji
noun: Fijian(s)
adjective: Fijian

Finland
noun: Finn(s)
adjective: Finnish

France
noun: Frenchman(men), Frenchwoman(women)
adjective: French