word | | Nationality |
| 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 |
| adjective | Slovenia | noun: Slovene(s) adjective: Slovenian |
| adjective | Solomon Islands | noun: Solomon Islander(s) adjective: Solomon Islander |
| adjective | Somalia | noun: Somali(s) adjective: Somali |
| adjective | South Africa | noun: South African(s) adjective: South African |
| adjective | Spain | noun: Spaniard(s) adjective: Spanish |
| adjective | Sri Lanka | noun: Sri Lankan(s) adjective: Sri Lankan |
| adjective | Sudan | noun: Sudanese (singular and plural) adjective: Sudanese |
| adjective | Suriname | noun: Surinamer(s) adjective: Surinamese |
| adjective | Swaziland | noun: Swazi(s) adjective: Swazi |
| adjective | Sweden | noun: Swede(s) adjective: Swedish |
| adjective | Switzerland | noun: Swiss (singular and plural) adjective: Swiss |
| adjective | Syria | noun: Syrian(s) adjective: Syrian |
| adjective | Taiwan | noun: Taiwan (singular and plural) note: example - he or she is from Taiwan; they are from Taiwan adjective: Taiwan |
| adjective | Tajikistan | noun: Tajikistani(s) adjective: Tajikistani |
| adjective | Tanzania | noun: Tanzanian(s) adjective: Tanzanian |
| adjective | Thailand | noun: Thai (singular and plural) adjective: Thai |
| adjective | Timor-Leste | noun: Timorese adjective: Timorese |