For this page I will be including the regionally based guitar tunings from Indonesia, South East Asia and Papua New Guinea.

Papua New Guinea Guitar Tunings

E A B E G# B
 Samoan Ki Hood Lagoon A D E A E A C#

D G A D A D F#
Faiv Ki East New Britain G G C D G B D

Citations: Guitar Style, Open Tunings, and Stringband Music in Papua New Guinea by Denis Crowdy, Apwithire: Studies in Papua New Guinea Musics, 9 Institute of Papua New Guinea Studies.