ISO 639:s

| sts  |  |  | I/L |  |  | Shumashti |  |  |  |  |  |
| stt  |  |  | I/L |  |  | Stieng, Budeh |  |  |  |  |  |
| stu  |  |  | I/L |  |  | Samtao |  |  |  |  |  |
| stv  |  |  | I/L |  |  | Silt'e |  |  |  |  |  |
| stw  |  |  | I/L |  |  | Satawalese |  |  |  |  |  |
| sty  |  |  | I/L | Turkic |  | Siberian Tatar |  |  |  |  |  |
| sua  |  |  | I/L |  |  | Sulka |  |  |  |  |  |
| sub  |  |  | I/L |  |  | Suku |  |  |  |  |  |
| suc  |  |  | I/L |  |  | Subanon, Western |  |  |  |  |  |
| sue  |  |  | I/L |  |  | Suena |  |  |  |  |  |
| (suf)  |  |  |  |  |  | Tarpia |  |  |  |  |  |
| sug  |  |  | I/L |  |  | Suganga |  |  |  |  |  |
| (suh)  |  |  |  |  |  | Suba |  |  |  |  |  |
| sui  |  |  | I/L |  |  | Suki |  |  |  |  |  |
| suj  |  |  | I/L |  |  | Shubi |  |  |  |  |  |
| suk  |  | suk | I/L |  |  | Sukuma | sukuma |  | 苏库马语 | сукума |  |
| (sul)  |  |  | I/L |  |  | Surigaonon |  |  |  |  |  |
| (sum)  |  |  | I/L |  |  | Sumo-Mayangna |  |  |  |  |  |
| sun  | su | sun | I/L | Austronesian | basa Sunda | Sundanese | soundanais | sundanés | 巽他语 | сунданский | Sundanesisch |
| suq  |  |  | I/L |  |  | Suri |  |  |  |  |  |
| sur  |  |  | I/L |  |  | Mwaghavul |  |  |  |  |  |
| sus  |  | sus | I/L |  |  | Susu | soussou |  | 苏苏语 | сусу |  |
| sut  |  |  | I/E |  |  | Subtiaba |  | subtiaba |  |  |  |
| (suu)  |  |  |  |  |  | Sungkai |  |  |  |  |  |
| suv  |  |  | I/L |  |  | Sulung | sulung |  |  |  |  |
| suw  |  |  | I/L |  |  | Sumbwa |  |  |  |  |  |
| sux  |  | sux | I/A |  | eme-ĝir | Sumerian | sumérien | sumerio | 苏美尔语 | шумерский | Sumerisch |
| suy  |  |  | I/L |  |  | Suyá |  |  |  |  |  |
| suz  |  |  | I/L |  |  | Sunwar |  |  |  |  |  |
| sva  |  |  | I/L |  | ლუშნუ | Svan | svan(e) | suano | 斯万语 | сванский |  |
| svb  |  |  | I/L |  |  | Ulau-Suain |  |  |  |  |  |
| svc  |  |  | I/L |  |  | Vincentian Creole English |  |  |  |  |  |
| sve  |  |  | I/L |  |  | Serili |  |  |  |  |  |
| svk  |  |  | I/L |  |  | Slovakian Sign Language |  |  | 斯洛伐克手语 | словацкий жестовый |  |
| svm  |  |  | I/L |  |  | Slavomolisano |  |  |  |  |  |
| (svr)  |  |  | I/L |  |  | Savara |  | savara |  |  |  |
| svs  |  |  | I/L |  |  | Savosavo |  |  |  |  |  |
| svx  |  |  | I/H |  |  | Skalvian |  |  |  |  |  |
| swa  | sw | swa | M/L | Niger–Congo | kiswahili | Swahili (generic) | swahili | suahelí | 斯瓦希里语; 斯瓦西里语 | суахили | Suaheli |
| swb  |  |  | I/L |  | شِقُمُرِ | Comorian | comorien |  | 科摩罗语 |  |  |
| swc  |  |  | I/L |  |  | Swahili, Congo |  |  | 刚果斯瓦希里语 |  |  |
| swe  | sv | swe | I/L | Indo-European | svenska | Swedish | suédois | sueco | 瑞典语 | шведский | Schwedisch |
| swf  |  |  | I/L |  |  | Sere |  |  |  |  |  |
| swg  |  |  | I/L |  | Schwäbisch | Swabian | souabe |  | 斯瓦比亚语 | швабский | Schwäbisch |
| swh  |  |  | I/L |  |  | Swahili (specific) |  |  | 斯瓦希里语; 斯瓦西里语 |  |  |
| swi  |  |  | I/L |  |  | Sui | swi |  | 水语 |  |  |
| swj  |  |  | I/L |  |  | Sira |  |  |  |  |  |
| swk  |  |  | I/L |  |  | Sena, Malawi |  |  |  |  |  |
| swl  |  |  | I/L |  | svenskt teckenspråk（瑞典语：） | Swedish Sign Language |  |  | 瑞典手语 | шведский жестовый |  |
| swm  |  |  | I/L |  |  | Samosa |  |  |  |  |  |
| swn  |  |  | I/L |  |  | Sawknah |  |  |  |  |  |
| swo  |  |  | I/L |  |  | Shanenawa |  |  |  |  |  |
| swp  |  |  | I/L |  |  | Suau |  |  |  | суау | Suau |
| swq  |  |  | I/L |  |  | Sharwa |  |  |  |  |  |
| swr  |  |  | I/L |  |  | Saweru |  |  |  |  |  |
| sws  |  |  | I/L |  |  | Seluwasan |  |  |  |  |  |
| swt  |  |  | I/L |  |  | Sawila |  |  |  |  |  |
| swu  |  |  | I/L |  |  | Suwawa |  |  |  |  |  |
| swv  |  |  | I/L |  |  | Shekhawati |  |  |  |  |  |
| sww  |  |  | I/E |  |  | Sowa |  |  |  |  |  |
| swx  |  |  | I/L |  |  | Suruahá |  |  |  |  |  |
| swy  |  |  | I/L |  |  | Sarua |  |  |  |  |  |
| sxb  |  |  | I/L |  |  | Suba |  |  |  |  |  |
| sxc  |  |  | I/A |  |  | Sicanian |  |  |  |  |  |
| sxe  |  |  | I/L |  |  | Sighu |  |  |  |  |  |
| sxg  |  |  | I/L |  |  | Shixing |  |  | 史兴语 |  |  |
| sxk  |  |  | I/E |  |  | Kalapuya, Southern |  |  |  |  |  |
| sxl  |  |  | I/E |  |  | Selian |  |  | 瑟罗尼亚语 |  |  |
| sxm  |  |  | I/L |  |  | Samre |  |  |  |  |  |
| sxn  |  |  | I/L |  |  | Sangir |  |  |  |  |  |
| sxo  |  |  | I/A |  |  | Sorothaptic |  |  |  |  |  |
| sxr  |  |  | I/L |  |  | Saaroa |  |  | 沙阿鲁阿语 |  | Saaroa |
| sxs  |  |  | I/L |  |  | Sasaru |  |  |  |  |  |
| sxu  |  |  | I/L |  | Sächsisch | Saxon, Upper |  |  | 上撒克逊语 |  |  |
| sxw  |  |  | I/L |  |  | Gbe, Saxwe |  |  |  |  |  |
| sya  |  |  | I/L |  |  | Siang |  |  |  |  |  |
| syb  |  |  | I/L |  |  | Subanen, Central |  |  |  |  |  |
| syc  |  | syc | I/H |  |  | Syriac, Classical |  |  | 古典叙利亚语 | классический сирийский |  |
| syi  |  |  | I/L |  |  | Seki |  |  |  |  |  |
| syk  |  |  | I/L |  |  | Sukur |  |  |  |  |  |
| syl  |  |  | I/L |  |  | Sylheti |  |  | 塞海蒂语 |  |  |
| sym  |  |  | I/L |  |  | Samo, Maya |  |  |  |  |  |
| syn  |  |  | I/L |  |  | Senaya |  |  |  |  |  |
| syo  |  |  | I/L |  |  | Suoy |  |  |  |  |  |
| syr  |  | syr | M/L |  | ܣܘܪܝܐܝܐ | Syriac | syriaque |  | 古叙利亚语 | сирийский | Syrisch |
| sys  |  |  | I/L |  |  | Sinyar |  |  |  |  |  |
| syw  |  |  | I/L |  |  | Kagate |  |  |  |  |  |
| syx  |  |  | I/L | Niger–Congo |  | Samay |  |  |  |  |  |
| syy  |  |  | I/L |  |  | Al-Sayyid Bedouin Sign Language |  |  |  |  |  |
| sza  |  |  | I/L |  |  | Semelai |  |  | 舍弥来语 |  |  |
| szb  |  |  | I/L |  |  | Ngalum |  |  |  |  |  |
| szc  |  |  | I/L |  |  | Semaq Beri |  |  |  |  |  |
| szd  |  |  | I/E |  |  | Seru |  |  |  |  |  |
| sze  |  |  | I/L |  |  | Seze |  |  |  |  |  |
| szg  |  |  | I/L |  |  | Sengele |  |  |  |  |  |
| (szk)  |  |  |  |  |  | Sizaki |  |  |  |  |  |
| szl  |  |  | I/L |  | Ślůnsko godka | Silesian |  |  | 西里西亚语 |  |  |
| szn  |  |  | I/L |  |  | Sula |  |  |  |  |  |
| szp  |  |  | I/L |  |  | Suabo |  |  |  |  |  |
| szs  |  |  | I/L |  |  | Solomon Islands Sign Language |  |  |  |  |  |
| szv  |  |  | I/L |  |  | Isu (Fako Division) |  |  |  |  |  |
| szw  |  |  | I/L |  |  | Sawai |  |  |  |  |  |
| szy  |  |  | I/L | Austronesian |  | Sakizaya |  |  |  |  |  |