In the first final, the Morobe Rugby Football Union Hammerheads will take on the Rabaul Kais.
The game will kick off at 1pm.
The Hammerheads and the Kais topped the pools in their respective conferences in the Northern and New Guinea Islands (NGI) Conference.
The Hammerheads finished unbeaten in the round robin matches with three wins.
The Kais won two out three games to finish on top in the NGI Conference.
The second final at 3pm will be between the Capital Rugby Union (CRU) Gaigais and CRU Boromas.