word | | Nationality |
| adjective | Russia | noun: Russian(s) adjective: Russian |
| adjective | Rwanda | noun: Rwandan(s) adjective: Rwandan |
| adjective | Saint Helena | noun: Saint Helenian(s) adjective: Saint Helenian note: referred to locally as "Saints" |
| adjective | Saint Kitts and Nevis | noun: Kittitian(s), Nevisian(s) adjective: Kittitian, Nevisian |
| adjective | Saint Lucia | noun: Saint Lucian(s) adjective: Saint Lucian |
| adjective | Saint Pierre and Miquelon | noun: Frenchman(men), Frenchwoman(women) adjective: French |
| adjective | Saint Vincent and the Grenadines | noun: Saint Vincentian(s) or Vincentian(s) adjective: Saint Vincentian or Vincentian |
| adjective | Samoa | noun: Samoan(s) adjective: Samoan |
| adjective | San Marino | noun: Sammarinese (singular and plural) adjective: Sammarinese |
| adjective | Sao Tome and Principe | noun: Sao Tomean(s) adjective: Sao Tomean |
| adjective | Saudi Arabia | noun: Saudi(s) adjective: Saudi or Saudi Arabian |
| adjective | Senegal | noun: Senegalese (singular and plural) adjective: Senegalese |
| adjective | Serbia | noun: Serb(s) adjective: Serbian |
| adjective | Seychelles | noun: Seychellois (singular and plural) adjective: Seychellois |
| adjective | Sierra Leone | noun: Sierra Leonean(s) adjective: Sierra Leonean |
| adjective | Singapore | noun: Singaporean(s) adjective: Singapore |
| adjective | Slovakia | noun: Slovak(s) adjective: Slovak |