| Summit City | Summit City |
| Summit della Terra | Earth Summit |
| Summorum Pontificum | Summorum Pontificum |
| Sumner Paine | Sumner Paine |
| Sumo | Sumo |
| Sumvitg | Sumvitg |
| SUN | Sun |
| Sun Myung Moon | Sun Myung Moon |
| Sun Tzu | Sun Tzu |
| Sun Wukong | Sun Wukong |
| Sun Xiang | Sun Xiang |
| Sun Yat-sen | Sun Yat-sen |
| Sunao Tawara | Sunao Tahara |
| Sunbelt Kerio Personal Firewall | Sunbelt Personal Firewall |
| Suncus etruscus | Etruscan Shrew |
| Sundance Film Festival | Sundance Film Festival |
| Sundance Kid | Harry Longabaugh |
| Sundarbans | Sundarbans |
| Sunday | Sunday |
| Sunday Bloody Sunday | Sunday Bloody Sunday |
| Sunday Stephen Obayan | Stephen Sunday |
| Sundbyberg | Sundbyberg Municipality |
| Sunderland | Sunderland |
| Sundern | Sundern |
| Sundeved | Sundeved |
| Sundjata Keita | Sundiata Keita |
| Sundsvall | Sundsvall |
| Sundsøre | Sundsøre municipality |
| Sung Hi Lee | Sung-Hi Lee |
| Sunita Williams | Sunita Williams |
| Sunna | Sunna |
| Sunndal | Sunndal |
| Sunne | Sunne Municipality |
| Sunnismo | Sunni |
| Sunnmøre | Sunnmøre |
| sunnominato | above |
| Sunny Baudelaire | Sunny Baudelaire |
| Sunnydale High | Sunnydale High |
| Sunrise Avenue | Sunrise Avenue |
| suo | yours |
| suo stesso | very own |
| suocera | mother |
| suoceri | in-laws |
| suocero | father-in-law |
| suoi | his |
| Suol | Religious habit |
| suola | sole |
| suolare | sole |
| suoli alcalini | alkali soil |
| suolo | soil |
| Suolo a gley | Gley soil |
| suolo contaminato | contaminated soil |
| suolo natio | fatherland |
| Suomenlinna | Suomenlinna |
| suonare | go off |
| suonare a prima vista | sight-read |
| suonare familiare | ring a bell |
| suonare il clacson | beeping |
| suonare in corda doppia | double-stop |
| suonare la tromba | trumpet |
| suonarle a | trounce |
