| 179261 | Sumau | nʌ | | | Z'graggen (1980) | tree |
| 78843 | Suki | riku | | | Voorhoeve (1970) | |
| 55300 | Suena (Yema-Yarawe Dialect) | ni[-gome] | leaf | | Smallhorn (2011) | |
| 28454 | Suena | ni | | | Wilson (1969) | |
| 55299 | Suena | ni | wood | | Smallhorn (2011) | |
| 22137 | Suabo | au | | | Voorhoeve (1975) | |
| 19008 | Sowari | ya-yeŋgan | | | Voorhoeve (1975) | |
| 17370 | Southern Kiwai | ota | | | Wurm (1973) | |
| 2426 | Southern Kiwai (Tureture Dialect) | ota | | | Wurm (1973) | |
| 179260 | Sop | au | | | Z'graggen (1980) | tree |
| 15820 | Sonia | yep | | | Shaw (1986) | |
| 91360 | Somba-Siawari (Mindik Dialect) | ip | tree | | McElhanon (1967) | tree |
| 91365 | Somba-Siawari (Burum Dialect) | ip | tree | | McElhanon (1967) | tree |
| 213649 | Som | karʌp | | | SIL (1968) | |
| 25040 | Sobei | ai | | | Voorhoeve (1975) | |
| 23781 | Skou | ri | | | Voorhoeve (1975) | |
| 30709 | Skou | ri | | | Voorhoeve (1971) | |
| 83504 | Sirva | tar | | | Daniels (2010) | |
| 179254 | Siroi | ail | | | Z'graggen (1980) | tree |
| 179247 | Sinsauru | a:li | | | Z'graggen (1980) | tree |
| 258341 | Sinaugoro | ɣau | | | Dutton (1970) | tree |
| 244162 | Sinagen | ni:pa | | | Laycock (1968) | |
| 4898 | Simbari | ika | | | Lloyd (1973) | |
| 123159 | Silopi | ɛn | | | Z'graggen (1980) | tree |
| 244170 | Siliput | lou | | | Laycock (1968) | |
| 22503 | Silimo (South Ngalik Dialect) | bene | | | Voorhoeve (1975) | |
| 26938 | Silimo | e | wood | | Bromley (1967) | tree (wood) |
| 192470 | Sileibi | tar | | | Z'graggen (1980) | tree |
| 24918 | Sikaritai | sari | | | Voorhoeve (1975) | |
| 217307 | Sikaritai | kug̚ | | | Clouse (1997) | |
| 123142 | Sihan | nʌi | | | Z'graggen (1980) | tree |
| 199537 | Siawi | ameʔ | | | Conrad and Dye (1975) | |
| 32633 | Siane (Kovena Dialect) | ja | | | Salisbury (1956) | |
| 32143 | Siane | ya | | | SIL (1987) | |
| 74673 | Siane | yá | | | Scott (1978) | |
| 32521 | Siane | ya | | | Salisbury (1956) | |
| 244153 | Seti | səno | | | Laycock (1968) | |
| 202693 | Setaman (Seltamin Dialect) | eis | | | Van Cott and Spencer (2010) | |
| 202815 | Setaman (Ngisokabip Dialect) | eis | | | Van Cott and Spencer (2010) | |
| 202952 | Setaman (Baktamin Dialect) | eis | | | Van Cott and Spencer (2010) | |
| 228548 | Seta | si | | | SIL (2000) | |
| 244152 | Seta | si | | | Laycock (1968) | |
| 25522 | Serui-Laut | ai | | | Voorhoeve (1975) | |
| 25530 | Serui-Laut | aiferab | | | Voorhoeve (1975) | |
| 26166 | Sentani | no | | | Voorhoeve (1975) | |
| 21336 | Sempan | oho | | | Voorhoeve (1975) | |
| 21616 | Semimi | u | | | Voorhoeve (1975) | |
| 91357 | Selepet | nak | tree | | McElhanon (1967) | tree |
| 20057 | Seget | bua | | | Voorhoeve (1975) | |
| 30074 | Sawi | toxo:d | | | Voorhoeve (1971) | |
