Fisheries Minister Mao Zeming revealed this at the launching of the Pacific Marine Industrial Zone (PMIZ) today in Madang.
Once fully developed PMIZ will house 10 tuna processing plants.
"There will be a new policy next year where all fish caught in PNG waters must be processed on shore," Zeming said.
He added that currently fish taken overseas for processing denied Papua New Guineans employment.
Currently the country loses revenue for tuna caught in the exclusive economy zone valued in the billions.
The Minister responsible for the fisheries sector is adamant to make the country the capital of tuna processing in the world.
Zeming said Thailand is the capital of tuna sales in the world but tuna is not fished in its waters.
He predicted that with the PMIZ construction phase off the ground, the country will host 9 tuna processing plants by 2018.