Petro Souths FC was a semi-professional association football club founded in 2010 and based in Mendi, the capital of the Southern Highlands province of Papua New Guinea, although they played their home games in Goroka. The side played in two editions of the Papua New Guinea National Soccer League, with their best result coming in the 2010–11 season, where they narrowly missed out on qualification for the playoffs, finishing 5th.