| 罗尔斯・罗伊斯 | Luó ěr sī · Luó yī sī | Rolls-Royce (UK company); also written 劳斯莱斯 |
| 翟理斯 | Zhái lǐ sī | Herbert Allen Giles (1845-1935), British diplomat and linguist, contributor to the Wade-Giles Chinese romanization system |
| 考克斯 | Kǎo kè sī | Cox (surname) |
| 考克斯报告 | Kǎo kè sī Bào gào | Cox Report; Report of the Select Committee on US National Security and Military-Commercial Concerns with the PRC (1999); Committee Chairman Republican Rep. Chris Cox |
| 圣克鲁斯 | Shèng Kè lǔ sī | Santa Cruz |
| 圣克鲁斯岛 | Shèng Kè lǔ sī dǎo | Santa Cruz island, off the California coast |
| 圣劳伦斯河 | Shèng Láo lún sī hé | St Lawrence River, Canada |
| 圣基茨和尼维斯 | Shèng jī cí hé Ní wéi sī | Saint Kitts and Nevis |
| 圣奥古斯丁 | Shèng Ào gǔ sī dīng | St Augustine; Aurelius Augustinus (354-430), theologian and Christian philosopher; Sankt Augustin, suburb of Beuel, Bonn, Germany |
| 圣安地列斯断层 | Shèng Ān de liè sī duàn céng | San Andreas fault, California; also written 圣安德列斯断层 |
| 圣安德列斯断层 | Shèng Ān dé liè sī duàn céng | San Andreas fault, California |
圣文森特和格林纳
丁斯 | Shèng wén sēn tè hé Gé lín nà dīng sī | Saint Vincent and the Grenadines |
| 圣潘克勒斯站 | shèng Pān kè lēi sī zhàn | Saint Pancras (London railway station) |
| 圣约翰斯 | Shèng Yuē hàn sī | St John's, capital of Labrador and Newfoundland province, Canada |
| 圣路易斯 | Shèng lù yì sī | St Louis, large city in eastern Missouri |
| 腓特烈斯塔 | Féi tè liè sī tǎ | Fredrikstad (city in Østfold, Norway) |
| 艾赛克斯 | Ài sài kè sī | Essex (English county) |
| 荷属安的列斯 | Hé shǔ Ān de liè sī | Netherlands Antilles |
| 莫杰斯特 | Mò jié sī tè | Modest (name); Modeste (name) |
| 莫尼卡・莱温斯基 | Mò ní kǎ · Lái wēn sī jī | Monica Lewinsky |
| 莫拉莱斯 | Mò lā lái sī | Morales |
| 莫斯特 | Mò sī tè | Mousterian (a Palaeolithic culture) |
| 莫尔斯 | Mò ěr sī | Morse (name) |
| 莫尔斯电码 | Mò ěr sī diàn mǎ | Morse code |
| 莫罕达斯 | Mò hǎn dá sī | Mohandas (name) |
| 菲力克斯 | Fēi lì kè sī | Felix (name) |
| 菲尼克斯 | Fēi ní kè sī | Phoenix, capital of Arizona; also 凤凰城 |
| 菲尔普斯 | Fēi ěr pǔ sī | Phelps (name); Michael Phelps (1985-), US swimmer and multiple Olympic gold medallist |
| 莱斯大学 | Lái sī dà xué | Rice university (Houston, Texas) |
| 莱斯沃斯岛 | Lái sī wò sī dǎo | Lesbos (Greek island in the Aegean sea 爱琴海) |
| 莱斯特 | Lái sī tè | Lester or Leicester (name); Leicester, English city in East Midlands |
| 莱斯特郡 | Lái sī tè jùn | Leicestershire, English county |
| 莱温斯基 | lái wēn sī jī | (Monica) Lewinsky |
| 蒙帕纳斯 | Měng pà nà sī | Montparnasse (southeast Paris, 14ème arrondissement) |
| 萨克斯 | sà kè sī | sax; saxophone |
| 萨克斯风 | sà kè sī fēng | saxophone |
| 萨斯 | sà sī | SARS; Severe Acute Respiratory Syndrome |
| 萨斯卡通 | Sà sī kǎ tōng | Saskatoon city, Saskatchewan, Canada |
| 萨斯喀彻温 | Sà sī kā chè wēn | Saskatchewan province, Canada |
| 萨斯病 | sà sī bìng | SARS (Severe Acute Respiratory Syndrome) |
| 萨尔普斯堡 | Sà ěr pǔ sī bǎo | Sarpsborg (city in Østfold, Norway) |
| 萨兰斯克 | Sà lán sī kè | Saransk, capital of the Republic of Mordovia, Russia |
| 兰斯洛特 | Lán sī luò tè | Lancelot (name) |
| 兰迪斯 | Lán dí sī | Landis (name) |
| 螽斯 | zhōng sī | katydid or long-horned grasshopper (family Tettigoniidae) |
| 螽斯科 | zhōng sī kē | Tettigoniidae (katydids and crickets) |
| 螽斯总科 | zhōng sī zǒng kē | Tettigonioidea (katydids and crickets) |
| 裘力斯・恺撒 | Qiú lì sī · Kǎi sǎ | Julius Caesar, 1599 tragedy by William Shakespeare 莎士比亚 |
| 西斯塔尼 | xī sī tǎ ní | Sistani (name of a prominent Iraqi Ayatollah) |
| 西斯廷 | Xī sī tíng | Sistine (Chapel); also written 西斯汀 |
