Emmanuel Waine, Rodrick Tai, Sherwin Tanabi and Judah Rimbu have been called up to the Wayne Bennett-coached side for train and trial deals in 2023.
They join fellow Papua New Guinean and Kumul player, Jeremiah Simbiken in the squad.
This is through a strategic pathway signed between the PNG Hunters and the NRL Dolphins in 2022.
Of those four players, two will be selected by the Dolphins to stay on and train with their NRL squad for the remainder of the season.