| 25028 | Sobei | asa- | | | Voorhoeve (1975) | |
| 82832 | Sirva | iᵐb | | | Daniels (2010) | |
| 177894 | Siroi | nyunu | | | Z'graggen (1980) | name |
| 177887 | Sinsauru | weni | | | Z'graggen (1980) | name |
| 259737 | Sinaugoro | ara- | | | Dutton (1970) | [(name)] |
| 4935 | Simbari | yavata | | | Lloyd (1973) | |
| 121667 | Silopi | wani- | | | Z'graggen (1980) | name |
| 26905 | Silimo | onuk | | | Bromley (1967) | |
| 191712 | Sileibi | imbu | | | Z'graggen (1980) | name |
| 221588 | Sikaritai | ata | | | Clouse (1997) | |
| 121649 | Sihan | veni- | | | Z'graggen (1980) | name |
| 32637 | Siane (Kovena Dialect) | ureheve | | | Salisbury (1956) | |
| 32169 | Siane | wulinde | | | SIL (1987) | |
| 32525 | Siane | kuria | | | Salisbury (1956) | |
| 73492 | Siane | kúlí(yá) | | | Scott (1978) | |
| 157935 | Sialum | aŋara | | | McElhanon and Voorhoeve (1970) | name |
| 202647 | Setaman (Seltamin Dialect) | win | | | Van Cott and Spencer (2010) | |
| 202791 | Setaman (Ngisokabip Dialect) | win | | | Van Cott and Spencer (2010) | |
| 202906 | Setaman (Baktamin Dialect) | win | | | Van Cott and Spencer (2010) | |
| 25510 | Serui-Laut | anoŋ | | | Voorhoeve (1975) | |
| 26154 | Sentani | do | | | Voorhoeve (1975) | |
| 157952 | Sene | dzeŋe | | | McElhanon and Voorhoeve (1970) | name |
| 21324 | Sempan | iwahe | | | Voorhoeve (1975) | |
| 157863 | Sempan | iwahe | | | McElhanon and Voorhoeve (1970) | name |
| 21604 | Semimi | nawata | | | Voorhoeve (1975) | |
| 91161 | Selepet | kut- | (its) name | | McElhanon (1967) | (its) name |
| 157945 | Selepet | kut | | | McElhanon and Voorhoeve (1970) | name |
| 20045 | Seget | nomo | | | Voorhoeve (1975) | |
| 30047 | Sawi | fui | | | Voorhoeve (1971) | |
| 21090 | Sawi | fui | | | Voorhoeve (1975) | |
| 75627 | Savosavo | nini | | | Wegener (2011) | |
| 177889 | Sausi | weni | | | Z'graggen (1980) | name |
| 121660 | Saruga | pina | | | Z'graggen (1980) | name |
| 221570 | Saponi | nɔɾiamoɣoɾa | | | Clouse (1997) | |
| 224942 | Saniyo-Hiyewe | yapɛ | | | Dye et al (1968) | |
| 1358 | Saniyo-Hiyewe | yapɛ | | | Macdonald (1973) | |
| 121658 | Samosa | bina | | | Z'graggen (1980) | name |
| 5852 | Samo | hu̧ti | | | Shaw (1973) | |
| 157885 | Samo | hũ | | | McElhanon and Voorhoeve (1970) | name |
| 15957 | Samo | hũti | | | Shaw (1986) | |
| 4256 | Samberigi | biki | | | Franklin and Voorhoeve (1973) | |
| 80378 | Samberigi | biki | | | Franklin (1975) | |
| 177914 | Sam | doɲam | | | Z'graggen (1980) | name |
| 215274 | Sam (Wongbe Dialect) | doɲam | | | Rueck & Jore (2003) | |
| 215023 | Sam (Songum Dialect) | doɲam | | | Rueck & Jore (2003) | |
| 215148 | Sam (Buan Dialect) | doɲam | | | Rueck & Jore (2003) | |
| 78317 | Sahu | lomanga | | | Visser & Voorhoeve (1987) | |
| 16997 | Safeyoka | yave | | | Lloyd (1973) | |
| 177899 | Saep | im- | | | Z'graggen (1980) | name |
| 654 | Rumu | paina | | | Franklin (1973) | |
