| sile1255 | Sirva | T,
M,
S,
+,
C,
Northern | 63 |
| sili1249 | Silimo | T,
W,
D,
Ngalik | 115 |
| apz | safe1240 | Safeyoka | T,
A,
Nuclear Angan | 109 |
| bmu | buru1306 | Somba-Siawari (Mindik Dialect) | T,
F,
H,
Western | 196 |
| bmu | buru1306 | Somba-Siawari (Burum Dialect) | T,
F,
H,
Western | 196 |
| dmy | demt1241 | Sowari | E,
S,
Demta | 40 |
| etz | semi1264 | Semimi | Mairasi | 40 |
| kjd | sout2949 | Southern Kiwai (Tureture Dialect) | T,
Kiwaian | 149 |
| kjd | sout2950 | Southern Kiwai | T,
Kiwaian | 164 |
| mkc | sili1247 | Siliput | T,
M,
Maimai Proper | 44 |
| mmp | siaw1243 | Siawi | Amto-Musan | 101 |
| saj | sahu1245 | Sahu | W,
N,
Sahu | 361 |
| sao | saus1247 | Sause | T,
O,
Sause | 23 |
| saw | sawi1257 | Sawi | T,
O,
A,
Sawi | 138 |
| sbg | sege1235 | Seget | W,
West Bird's Head | 40 |
| sbi | seti1248 | Seti | T,
West Wapei | 46 |
| sbq | sile1255 | Sileibi | T,
M,
S,
J,
Sikan | 356 |
| sej | sene1263 | Sene | T,
F,
H,
Eastern | 56 |
| set | nucl1632 | Sentani | E,
S,
Sentani Proper | 49 |
| seu | seru1244 | Serui-Laut | A,
M,
C,
E,
S,
W,
C,
Y,
Central-Western | 58 |
| siq | soni1260 | Sonia | T,
Bosavi | 97 |
| siu | sina1269 | Sinagen | T,
W,
Wapei | 38 |
| six | suma1270 | Sumau | T,
M,
R,
Peka | 349 |
| skv | nucl1634 | Skou | S,
S,
N,
Skou | 126 |
| slw | sial1240 | Sialum | T,
F,
H,
Western | 58 |
| smb | simb1255 | Simbari | T,
A,
Nuclear Angan | 104 |
| smc | somm1240 | Som | T,
F,
F,
Uruwa | 257 |
| smq | samo1303 | Samo | T,
East Strickland | 258 |
| snc | sina1266 | Sinaugoro | A,
M,
C,
E,
O,
W,
P,
P,
C,
Sinagoro-Keapara | 270 |
| snp | sian1257 | Siane (Kovena Dialect) | T,
K,
G,
Siane | 44 |
| snp | sian1257 | Siane | T,
K,
G,
Siane | 354 |
| snr | siha1245 | Sihan | T,
M,
C,
Gum | 369 |
| snx | samm1244 | Sam (Wongbe Dialect) | T,
M,
R,
Mindjim | 127 |
| snx | samm1244 | Sam (Songum Dialect) | T,
M,
R,
Mindjim | 125 |
| snx | samm1244 | Sam | T,
M,
R,
Mindjim | 316 |
| snx | samm1244 | Sam (Buan Dialect) | T,
M,
R,
Mindjim | 126 |
| sny | sani1270 | Saniyo-Hiyewe | S,
S,
Sanio | 217 |
| snz | sins1241 | Sinsauru | T,
M,
R,
Evapia | 352 |
| sob | sobe1238 | Sobei | A,
M,
C,
E,
O,
W,
N,
S,
Sarmi | 17 |
| sow | sowa1245 | Sowanda | B,
Waris | 130 |
| spd | saep1240 | Saep | T,
M,
R,
Yaganon | 340 |
| spi | sapo1254 | Saponi | L,
Rasawa-Saponi | 206 |
| spl | sele1250 | Selepet | T,
F,
H,
Western | 207 |
| sra | saru1243 | Saruga | T,
M,
C,
Hanseman | 356 |
| ssd | siro1249 | Siroi | T,
M,
R,
Kabenau | 332 |
| ssj | saus1246 | Sausi | T,
M,
R,
Evapia | 361 |
| ssx | samb1321 | Samberigi | T,
E,
Angal-Kewa | 204 |
| stf | seta1245 | Seta | T,
West Wapei | 105 |
| stm | seta1246 | Setaman (Seltamin Dialect) | T,
O,
O,
Mountain | 144 |
| stm | seta1246 | Setaman (Baktamin Dialect) | T,
O,
O,
Mountain | 137 |
