Regions of Papua New Guinea
- South Branch
- South Bay Reef
- South Arm Bitoi River
- Soubu Plantation
- Souba Souba Islands
- Souba Plantation
- Sou
- Sotangai
- Sosson Island
- Sosson
- Sosoninko
- Sosoli
- Sosi
- Sos
- Sorovi Blocks
- Sorotagi
- Sorotage
- Soroputa
- Sorong
- Sorobosogo
- Sorobo
- Sori Number 2
- Sori Number 1
- Sori Island
- Sori
- Mount Sorau
- Mount Soraramba
- Sorape
- Sorang
- Soraken Harbour
- Sor
- Soputa
- Sopau
- Sopa Sopa Plantation
- Sopa Sopa Head
- Sopa River
- Sopa
- So’oge Creek
- So’obe Creek
- Sontamatia Island
- Son Reef
- Sonoma Mission
- Sonofi
- Mount Sonmingingan
- Sonilu
- Songura
- Songum
- Songsong River
- Song Shoals
- Song River
- Mount Songo
- Songhe
- Songgin
- Songgaku
- Songadi
- Sonegata
- Sondigi
- Sonda Dome
- Sonbui Nambes
- Sonbui
- Sonbui
- Sonai
- Sonagi
- Somsuver Point
- Somsupi
- Som River
- Mount Somero
- Somek
- Some
- Somaikwankia
- Somaidemasuk
- Somai
- Somai
- Somaebinkia
- Solwan
- Solu River
- Sol River
- Sol River
- Mount Solpor
- Solomon Islands
- Solomon Basin
- Soloku
- Soliabedo
- Soli
- Soli
- Solasola Island
- Solang
- Sol
- Sokula River
- Mount Sokosung
- Sokelen
- Sokaneng
- Sokabi
- Soisoi Bay
- Soia
- Sohu River
- Sohun Number 2
- Sohun Number 1
- Sohano Island
- Sohano
- Sogram Island
- Sogram
- Sogo Number 2
- Sogomizuha
- Mount Sogolomik
- Sogolomik
- Sogeri
- Sogeri
- Sogeram River
- Cape Sogelon
- Sogayufa
- Sogale
- Sogaibi
- Sogaba
- Soeka-Boemi Plantation
- Soech Island
- Sodiobi
- Sobuwabuda Island
- Mount Sobu
- Sobowada Island
- Sobagil
- Soba
- Soaru Range
- Soa River
- Soari River
- Soari River
- Soarin
- Soandogum
- Soandogum
- Soalaba River
- Soaiaf
- Soabi Number 2
- Soabi Number 1
- So
- Sneilum
- Snake River
- Snake Mountain
- Smiths Saddle
- Smith Cape
- Wai Smare
- Small Sivisa Island
- Small Muschu
- Ok Smak
- Smain
- Mount Slow
- Mount Sloane
- Slei Number 2
- Slei Number 1
- Slate Creek
- Slate Creek
- Slate Creek
- Slangu Creek
- Skotiaho
- Skotiaho
- Skok Island
- Skin Diwai Camp
- Siyugei
- Siwori Creek
- Siwea
- Siwat Island
- Siwataia Island
- Siwarima
- Siwanpuna
- Sivitatana
- Sivisa Island
- Siviri
- Sivil
- Sivigolo Plantation
- Sivepe
- Sivebo
- Sivariri
- Sivai River
- Siurani
- Siuknai
- Siuamosom
- Siu
- Siu
- Siu
- Situm Primary School
- Sitipa River
- Sitaba
- Sissuis
- Sissiak
- Sissano Villages
- Sissano Plantation
- Sissano Patrol Post
- Sissano Mission
- Sissano Lagoon
- Sisiworo River
- Sisireta
- Sisiobi
- Sisimwa
- Sisimi
- Sisimi
- Sisimba
- Sisimangun
- Sisilok
- Sisi Liu Island
- Sisilika
- Sisike Creek