| 2438 | Southern Kiwai (Tureture Dialect) | tuturu | | | Wurm (1973) | |
| 181423 | Sop | kuab | | | Z'graggen (1980) | long |
| 181424 | Sop | dimolo | | | Z'graggen (1980) | long |
| 15832 | Sonia | sʌdʌ | | | Shaw (1986) | |
| 90772 | Somba-Siawari (Mindik Dialect) | kâripŋi | long | | McElhanon (1967) | long |
| 158216 | Somba-Siawari (Mindik Dialect) | kʌrip | | | McElhanon and Voorhoeve (1970) | long |
| 158215 | Somba-Siawari (Burum Dialect) | kʌrip | | | McElhanon and Voorhoeve (1970) | long |
| 90777 | Somba-Siawari (Burum Dialect) | kâripŋi | long | | McElhanon (1967) | long |
| 158193 | Som | sumŋi | | | McElhanon and Voorhoeve (1970) | long |
| 213864 | Som | sumŋi | | | SIL (1968) | |
| 30678 | Skou | ekapé | | | Voorhoeve (1971) | |
| 181416 | Siroi | kʷen | | | Z'graggen (1980) | long |
| 181409 | Sinsauru | unɛnɛ | | | Z'graggen (1980) | long |
| 258916 | Sinaugoro | mauka | | | Dutton (1970) | long |
| 4910 | Simbari | kɨmika | | | Lloyd (1973) | |
| 125539 | Silopi | duru:g | | | Z'graggen (1980) | long |
| 26260 | Silimo | jat | | | Bromley (1967) | |
| 193712 | Sileibi | kuta | | | Z'graggen (1980) | long |
| 218997 | Sikaritai | kwɛd̚ | | | Clouse (1997) | |
| 125522 | Sihan | ɛʔɛra | | | Z'graggen (1980) | long |
| 73629 | Siane | fána | | | Scott (1978) | |
| 32542 | Siane | fanafana | | | Salisbury (1956) | |
| 32187 | Siane | hatna | | | SIL (1987) | |
| 158210 | Sialum | kira | | | McElhanon and Voorhoeve (1970) | long |
| 202663 | Setaman (Seltamin Dialect) | tʰiɛk tiɛk | | | Van Cott and Spencer (2010) | |
| 202922 | Setaman (Baktamin Dialect) | tʰiɑk̚ tʰiɑk̚ | | | Van Cott and Spencer (2010) | |
| 158224 | Sene | dari | | | McElhanon and Voorhoeve (1970) | long |
| 158146 | Sempan | inawako | | | McElhanon and Voorhoeve (1970) | long |
| 158220 | Selepet | kɔlip | | | McElhanon and Voorhoeve (1970) | long |
| 90769 | Selepet | kâlip | long | | McElhanon (1967) | long |
| 30038 | Sawi | jagu:r | | | Voorhoeve (1971) | |
| 75709 | Savosavo | savanga | | | Wegener (2011) | |
| 181411 | Sausi | rʰobei(no) | | | Z'graggen (1980) | long |
| 125532 | Saruga | tariːhu | | | Z'graggen (1980) | long |
| 218979 | Saponi | powiɾɛ | | | Clouse (1997) | |
| 225040 | Saniyo-Hiyewe | pitase | | | Dye et al (1968) | |
| 1333 | Saniyo-Hiyewe | piteyaʔi | | | Macdonald (1973) | |
| 125530 | Samosa | vougu | | | Z'graggen (1980) | long |
| 5827 | Samo | sago | | | Shaw (1973) | |
| 158166 | Samo | sago | | | McElhanon and Voorhoeve (1970) | long |
| 15932 | Samo | sagɔ | | | Shaw (1986) | |
| 4231 | Samberigi | hokulu | | | Franklin and Voorhoeve (1973) | |
| 181438 | Sam | iloŋai | | | Z'graggen (1980) | long |
| 78527 | Sahu | tiara | | | Visser & Voorhoeve (1987) | |
| 78528 | Sahu | ki'danga | | | Visser & Voorhoeve (1987) | |
| 16972 | Safeyoka | zaawema | | | Lloyd (1973) | |
| 181422 | Saep | kulindi(mbe) | | | Z'graggen (1980) | long |
| 577 | Rumu | hau | | | Franklin (1973) | |
| 181432 | Rerau | saŋgayay | | | Z'graggen (1980) | long |
| 125537 | Rempi | weiʔ nana | | | Z'graggen (1980) | long |
