raguan(s)
adjective: Nicaraguan

Niger
noun: Nigerien(s)
adjective: Nigerien

Nigeria
noun: Nigerian(s)
adjective: Nigerian

Niue
noun: Niuean(s)
adjective: Niuean

Norfolk Island
noun: Norfolk Islander(s)
adjective: Norfolk Islander(s)

Northern Mariana Islands
noun: NA
adjective: NA

Norway
noun: Norwegian(s)
adjective: Norwegian

Oman
noun: Omani(s)
adjective: Omani

Pakistan
noun: Pakistani(s)
adjective: Pakistani

Palau
noun: Palauan(s)
adjective: Palauan

Panama
noun: Panamanian(s)
adjective: Panamanian

Papua New Guinea
noun: Papua New Guinean(s)
adjective: Papua New Guinean

Paraguay
noun: Paraguayan(s)
adjective: Paraguayan

Peru
noun: Peruvian(s)
adjective: Peruvian

Philippines
noun: Filipino(s)
adjective: Philippine

Pitcairn Islands
noun: Pitcairn Islander(s)
adjective: Pitcairn Islander

Poland
noun: Pole(s)
adjective: Polish

Portugal
noun: Portuguese (singular and plural)
adjective: Portuguese

Puerto Rico
noun: Puerto Rican(s) (US citizens)
adjective: Puerto Rican

Qatar
noun: Qatari(s)
adjective: Qatari

Reunion
noun: Reunionese (singular and plural)
adjective: Reunionese

Romania
noun: Romanian(s)
adjective: Romanian

Russia
noun: Russian(s)
adjective: Russian

Rwanda
noun: Rwandan(s)
adjective: Rwandan

Saint Helena
noun: Saint Helenian(s)
adjective: Saint Helenian

Saint Kitts and Nevis
noun: Kittitian(s), Nevisian(s)
adjective: Kittitian, Nevisian

Saint Lucia
noun: Saint Lucian(s)
adjective: Saint Lucian

Saint Pierre and Miquelon
noun: Frenchman(men), Frenchwoman(women)
adjective: French

Saint Vincent and the Grenadines
noun: Saint Vincentian(s) or
Vincentian(s)
adjective: Saint Vincentian or Vincentian

Samoa
noun: Samoan(s)
adjective: Samoan

San Marino
noun: Sammarinese (singular and plural)
adjective: Sammarinese

Sao Tome and Principe
noun: Sao Tomean(s)
adjective: Sao Tomean

Saudi Arabia
noun: Saudi(s)
adjective: Saudi or Saudi Arabian

Senegal
noun: Senegalese (singular and plural)
adjective: Senegalese

Serbia and Montenegro
noun: Serb(s); Montenegrin(s)
adjective: Serbian; Montenegrin

Seychelles
noun: Seychellois (singular and plural)
adjective: Seychellois

Sierra Leone
noun: Sierra Leonean(s)
adjective: Sierra Leonean

Singapore