Netherlands New Guinea Are you trying to figure out the old term for the region The name as it was actually called by people during the th century until  was Dutch New Guinea though I think Netherlands New Guinea may have been the offical designation since WWII   The reason westerners then started to call it West Papua was because it was no longer Dutch and West Papua is the shorest  easiest description so you knew percisely where you were talking about Indonesia was using something that noone could pronounce or remember straight Its only coincidence that it was also what the Papuans had decided they wanted their nation called West Papua remains the simplist geographic description that people will most commonly try to refer to it as  A person says hes from West Papua you know what he means he says hes from Papua you assume hes form PNG