| 123883 | Samosa | bʌve | | | Z'graggen (1980) | mountain |
| 225004 | Saniyo-Hiyewe | omo | | | Dye et al (1968) | |
| 1316 | Saniyo-Hiyewe | omo | | | Macdonald (1973) | |
| 215499 | Saponi | iɾiɾe | | | Clouse (1997) | |
| 123885 | Saruga | fafɛ | | | Z'graggen (1980) | mountain |
| 179919 | Sausi | motoru | | | Z'graggen (1980) | mountain |
| 91301 | Selepet | gibâŋe | mountain | | McElhanon (1967) | mountain |
| 202938 | Setaman (Baktamin Dialect) | amu | | | Van Cott and Spencer (2010) | |
| 202802 | Setaman (Ngisokabip Dialect) | ɑmŋu | | | Van Cott and Spencer (2010) | |
| 202680 | Setaman (Seltamin Dialect) | ɑmŋu | | | Van Cott and Spencer (2010) | |
| 32518 | Siane | kora | | | Salisbury (1956) | |
| 73457 | Siane | mówa | | | Scott (1978) | |
| 32179 | Siane | gola | | | SIL (1987) | |
| 32630 | Siane (Kovena Dialect) | gora | | | Salisbury (1956) | |
| 199504 | Siawi | ʔɛǏiyɔ | | | Conrad and Dye (1975) | |
| 123872 | Sihan | ɛhɛn | | | Z'graggen (1980) | mountain |
| 123871 | Sihan | bɛsiʔ | | | Z'graggen (1980) | mountain |
| 215518 | Sikaritai | awedta | | | Clouse (1997) | |
| 192866 | Sileibi | utugru | | | Z'graggen (1980) | mountain |
| 26903 | Silimo | dom | | | Bromley (1967) | |
| 123892 | Silopi | ʔiː | | | Z'graggen (1980) | mountain |
| 4893 | Simbari | munkuta | | | Lloyd (1973) | |
| 258212 | Sinaugoro | ɣoro | | | Dutton (1970) | mountain |
| 179916 | Sinsauru | motɛ | | | Z'graggen (1980) | mountain |
| 179917 | Sinsauru | sahoteim | | | Z'graggen (1980) | mountain |
| 179924 | Siroi | tabe | | | Z'graggen (1980) | mountain |
| 179925 | Siroi | biŋ | | | Z'graggen (1980) | mountain |
| 30685 | Skou | pe | | | Voorhoeve (1971) | |
| 213715 | Som | moktu(u)k | | | SIL (1968) | |
| 91309 | Somba-Siawari (Burum Dialect) | kunduŋi | mountain | | McElhanon (1967) | mountain |
| 91304 | Somba-Siawari (Mindik Dialect) | kunduŋi | mountain | | McElhanon (1967) | mountain |
| 15815 | Sonia | muṣiʌ | | | Shaw (1986) | |
| 179931 | Sop | gir | | | Z'graggen (1980) | mountain |
| 2421 | Southern Kiwai (Tureture Dialect) | podo | | | Wurm (1973) | |
| 17365 | Southern Kiwai | auwo damera | | | Wurm (1973) | |
| 30851 | Sowanda | aigen (?) | | | Voorhoeve (1971) | |
| 52250 | Suena | di | mountain | | Smallhorn (2011) | |
| 52249 | Suena | diru[mu] | mountain | | Smallhorn (2011) | |
| 52251 | Suena (Yema-Yarawe Dialect) | didu[m] (sic) | hill | | Smallhorn (2011) | |
| 179932 | Sumau | sanawa | | | Z'graggen (1980) | mountain |
| 1616 | Tabo | haka hunu hunu | | | Wurm (1973) | |
| 27577 | Tabo | pɔ:dɔ | | | Reesink (1976) | |
| 245817 | Tabriak | imbuk | | | SIL (1990) | |
| 245985 | Tabriak | yɩmbuk | | | SIL (1967) | |
| 30295 | Taikat | janar | | | Voorhoeve (1971) | |
| 15711 | Tainae | faarere | | | Lloyd (1973) | |
| 73458 | Tairora, North | batamuatu | | | Scott (1978) | |
| 31352 | Tairora, South | taʔi | | | SIL (1976) | |
| 3162 | Tairuma | raepa | | | Brown (1973) | |
| 212048 | Tangko | ɸɑˈlɯm | | | Hughes (2009) | |
