Places beginning with SI in Northern, Papua New Guinea
Sia
Siabe
Siai
Sibia
Siga
Sila
Silimbo
Silimidi
Simumu
Sinapa
Sinei
Sinepara
Singi
Sinipara
Sinua
Sirembi
Siremi
Sirorata
Sisireta
Siu
Siurani
Sivariri
Sivepe